Parameter Settings by Function. Omron L7
Omron L7 is a frequency inverter designed specifically for lifts. It offers a range of advanced features and capabilities that make it an ideal choice for this demanding application. With its compact design, easy installation, and intuitive operation, the Omron L7 is the perfect solution for modernizing or upgrading your lift system.
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6
Parameter Settings by
Function
Carrier Frequency Derating and Current Limitation ............6-2
Control / Brake Sequence...................................................6-3
Acceleration and Deceleration Characteristics .................6-20
Adjusting Analog Input Signals .........................................6-25
Speed Detection and Speed Limitation.............................6-26
Improving the Operation Performance..............................6-29
Protective Functions .........................................................6-40
Inverter Protection.............................................................6-47
Input Terminal Functions ..................................................6-50
Output Terminal Functions................................................6-56
Motor and V/f Pattern Setup .............................................6-59
Digital Operator/LED Monitor Functions ...........................6-64
PG Option Cards...............................................................6-72
Rescue System.................................................................6-77
Automatic Fault Reset.......................................................6-81
Memobus Communications ..............................................6-83
Carrier Frequency Derating and
Current Limitation
6
Carrier Frequency Setting
The carrier frequency selection has a direct influence on the motor noise. The higher the carrier frequency the lower is the motor noise. On the other hand the overload capability of the inverter is reduced with a higher carrier frequency. Both have to be considered when the setting is changed.
Related Parameters
Parameter
No.
C6-02
Name
Carrier frequency selection
Factory
Setting
3
Change during
Operation
No
V/f
Q
Control Methods
Open
Loop
Vector
Q
Closed
Loop
Vector
Q
Closed
Loop
Vector
(PM)
Q
Carrier Frequency Selection
The factory setting is 8 kHz for units from 3.7 to 22 kW and 5 kHz for units from 30 to 55 kW. Usually the value has not to be changed. However, if it necessary to change it, observe the following precautions:
•
•
If speed and torque oscillate at low speeds: Lower the carrier frequency.
If inverter noise affects peripheral devices: Lower the carrier frequency.
•
•
If leakage current from the Inverter too is large: Lower the carrier frequency.
If metallic noise from the motor is large: Increase the carrier frequency.
Carrier Frequency and Inverter Overload Capability
If the carrier frequency is increased the rated current is decreased and vice versa (refer to
). The overload capability is always 150% of the derated inverter current for 30 sec. If this
over load limit is exceeded the inverter trips with an inverter overload fault (OL2).
Current limitation level at low speeds
The Varispeed L7 limits the output current at low frequencies. This current limitation does not change with the carrier frequency selection. The current limitation in the low frequency range is as follows.
150%
140%
130%
120%
110%
200V Class 15kW
400V Class 30kW
200V Class 3.7, 18, 30kW
400V Class 18, 22kW
200V Class 5.5kW
400V Class 3.7, 5.5, 7.5, 11, 55kW
200V Class11kW
200V Class 7.5, 22 , 37, 45, 55kW
400V Class 4.0, 15, 37, 45kW
0
Output
Frequency
1.5Hz
3Hz 4.5Hz
6Hz
Fig 6.1 Low frequency current limitation
IMPORTANT
• If the torque at low frequencies is too low, check whether the current runs into the limitation explained above. If so, check the motor data settings (E2-
) and the V/f pattern (E1-
).
• If the current still runs into the limit it might be necessary to install a one size bigger inverter.
• For selecting an inverter please consider the low frequency current limit as described above and select an inverter with an appropriate current margin.
6-
2
Control / Brake Sequence
Up and Down Commands
Travel start in Up or Down direction
UP and Down commands are the travel direction information.
To start in the elevator in Up or Down direction the following conditions have to be fulfilled:
•
At least one speed reference must be selected if digital inputs are used for speed reference selection.
•
•
•
The hardware base block signal must be set (not base block condition).
When a digital input is set as contactor confirmation input, the contactor confirmation signal must be present before the travel starts.
To start in the Up direction the Up signal must be set. To start in the Down direction the Down signal must be set.
Travel stop
The inverter can be stopped as follows:
•
The direction command (UP or Down) signal is removed.
•
•
The speed reference selection signal is removed if digital inputs are used for speed reference selection.
If d1-18 is set to 3 and all speed inputs are removed
Up / Down Command Source Selection
The input source for the Up and Down signal can be selected in parameter b1-02.
Related Parameters
Parameter
No.
b1-02
Name
RUN command source selection
Factory
Setting
Change during
Operation
1 No
V/f
Q
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
Closed
Loop
Vector
(PM)
Q
Up/Down Commands Using the Digital Operator (b1-02=0)
When b1-02 is set to 0 the Up/Down command must be input using the Digital Operator keys (RUN, STOP, and FWD/REV). For details on the Digital Operator refer to
page 3-1, LED Monitor / Digital Operator and
. This operation can be used for test purposes only.
Up/Down Commands Using Control Circuit Terminals (b1-02=1, factory setting)
When b1-02 is set to 1 the Up/Down command is input at the control circuit terminals S1 and S2. This is the factory setting and the most common configuration.
Up/Down Commands Using an Input Option Card (b1-02=3)
When b1-02 is set to 2 the Up/Down command can be set using an input option card, for example a field bus communications card.
6
6-
3
6
Speed Reference Source Selection
Speed Reference Source Selection
The speed reference source can be selected using parameter b1-01.
Related Parameters
Parameter
No.
b1-01
Name
Frequency reference source selection
Factory
Setting
0
Change during
Operation
No
V/f
Q
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
Closed
Loop
Vector
(PM)
Q
Input the Speed Reference from the Digital Inputs (b1-01=0)
When b1-01 is set to 0 the speed reference can be selected from preset speeds using the digital inputs of the
page 6-5, Speed Selection Sequence Using Digital Inputs
Input the Speed Reference Using a Voltage Signal (b1-01=1)
When b1-01 is set to 1 the speed reference can be input at terminal A1 as a 0 to +10V signal. If an analog option card AI-14B is installed, the A1 signal is replaced by the Channel 1 input of the AI card.
The analog reference signal can also be used as 1st speed if multispeed operation is selected (d1-18=0, refer to
page 6-5, Speed Selection Sequence Using Digital Inputs
If parameter d1-18 is set to 0 and b1-01 is set to 1, the analog input value replaces any speed selected by the digital inputs except the service speed.
Input the Speed Reference Using an Input Option Card (b1-01=3)
When b1-01 is set to 2 the speed reference can be input using an input option card, for example a field bus communications card.
6-
4
Speed Selection Sequence Using Digital Inputs
If the digital inputs are used for speed selection, the speed selection method and the speed priority depends on the setting of parameter d1-18.
Control Methods
Parameter
No.
d1-18
Name
Speed Priority Selection
Factory
Setting
1
Change during
Operation
No
V/f
Q
Open
Loop
Vector
Q
Closed
Loop
Vector
Q
Closed
Loop
Vector
(PM)
Q
Multi-Step Speed Operation 1/2 (Binary Input) (d1-18=0/3)
If d1-18 = 0
8 preset speed steps (defined in the parameters d1-01 to d1-08) can be selected using 3 binary coded digital inputs. The Up/Down command starts the inverter. It stops when the Up/Down command is removed.
If d1-18 = 3
7 preset speed steps (defined in the parameters d1-02 to d1-08) can be selected using 3 binary coded digital inputs. The Up/Down command starts the inverter. It is stopped when the Up/Down command is removed or when no speed is selected (all D/Is off).
Related Parameters
Parameter
No.
d1-01 to d1-08
Name
Multi-Step speed 1 to 8 reference value
Factory
Setting
Change during
Operation
0.00 Hz
0.00%
Yes
V/f
A
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
-
A
-
Closed
Loop
Vector
(PM)
-
A
Multi-function Digital Input Settings (H1-01 to H1-05) (Example)
Terminal
S4
S5
S6
Parameter
Number
H1-02
H1-03
H1-04
Set Value
3
4
5
Multi-step speed command 1
Multi-step speed command 2
Multi-step speed command 3
Details
6
6-
5
6
1
6
7
8
4
5
2
3
Speed Selection Table
The following table shows the combinations of the digital input and the according speed.
If b1-02 is set to “1”, speed 1 is input as analog reference at terminal A1 or Channel CH1 of an analog input option card AI-14B if it is installed.
If an AI-14B option card is used and the functions for channel CH2 and CH3 are set to “Auxiliary Frequency
2” (H3-05/09=2) and “Auxiliary Frequency 3” (H3-05/09=3).
Speed
Multi-step Speed
Command 1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Multi-step Speed
Command 2
Multi-step Speed
Command 3
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Selected Frequency d1-18 = 0
Frequency reference 1 d1-01 or A1/AI-14B CH1 d1-18 = 3
Stop
Frequency reference 2, d1-02 or AI-14B CH2
Frequency reference 3, d1-03 or AI-14B CH3
Frequency reference 4, d1-04
Frequency reference 5, d1-05
Frequency reference 6, d1-06
Frequency reference 7, d1-07
Frequency reference 8, d1-08
Nominal / Leveling Speed Detection with Multi Speed Inputs
Using this function the inverter can distinguish between the nominal and leveling speed when the speed selection is done by multifunction inputs which is required by other functions like the ASR controller, short floor operation and slip compensation for V/f control.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
S3-04 Nominal/Leveling speed detection level 0.00 Hz No
If the
•
reference speed >= S3-04 the selected speed is regarded as nominal speed
•
reference speed < S3-04 the selected speed is regarded as leveling speed
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
6-
6
Separate Speed Selection Inputs, High Speed Has Priority (d1-18=1)
If d1-18 is set to 1, 6 different speeds can be set and selected using four digital inputs.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation d1-09 d1-10 d1-11 d1-12 d1-13 d1-17
Nominal Speed
Intermediate Speed 1
Intermediate Speed 2
Intermediate Speed 3
Releveling Speed
Leveling Speed
50.00 Hz
100.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
4.00 Hz
8.00%
S3-09
Frequency reference loss detection when d1-18 = 1 and
H1-K83.
0:Disabled
1:Enabled
1
*1. This speed can be selected by a combination of two inputs
Yes
Yes
Yes
Yes
Yes
Yes
No
V/f
A
-
A
-
A
-
Q
-
Q
-
A
-
A
-
A
-
A
-
A
-
A
-
Q
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
-
A
-
A
-
A
-
A
-
Q
-
Closed
Loop Vector (PM)
-
Q
-
A
-
A
-
A
-
A
-
Q
Digital Input
Setting (H1-01 to H1-05)
80
81
-
*1
-
82
83
A
Digital Input Factory Settings
Terminal
S3
Parameter
Number
H1-01
Set Value
80
S4
S5
S6
H1-02
H1-03
H1-04
84
81
83
Details
Nominal speed selection (d1-09)
Inspection speed selection (d1-14)
Intermediate speed selection (d1-10)
Leveling speed selection (d1-17)
A A -
Higher Speed has Priority and a Leveling Speed Input is Selected (H1-=83)
If d1-18 is set to 1 and one multi-function digital input is set to leveling speed selection (H1-=83), the inverter decelerates to the leveling speed (d1-17) when the selected speed signal is removed. Inspection Speed can not be selected as travel speed. The higher speed has priority over the leveling speed, i.e. as long as a higher speed is selected, the leveling signal is disregarded (see the fig. below)
The inverter stops when the leveling signal or the Up/Down signal is removed.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Donw
Leveling speed
Selected speed
No effect
Input is set
6
6-
7
6
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
0
Intermed.
Speed 2 d1-11
1
Intermed.
Speed 3 d1-12
0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
X
1
0
X
1
1
X
1
1
X
0
1
X
0
0
1
* 0 = disabled, 1 = enabled, X = no meaning
0Hz
0
0
0
0
Higher Speed Priority is Selected and a Leveling Speed Input is Not Selected (H1-K83)
When the leveling speed command is not selected for any digital input, the inverter decelerates to the leveling speed (d1-17) when the selected speed signal is removed. Inspection Speed can not be selected as travel speed
To select the leveling speed as travel speed the frequency reference loss detection must be disabled (S3-09=0).
The inverter stops when the direction signal Up/Down is removed.
When no speed selection input is set the leveling speed is taken as the speed reference.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Selected speed
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
0
Intermed.
Speed 2 d1-11
1
Intermed.
Speed 3 d1-12
0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
N/A
1
0
N/A
1
1
N/A
1
1
N/A
0
1
N/A
0
0
N/A
* 0 = disabled, 1 = enabled, N/A = not available
The inverter stops when the direction signal (UP or DOWN signal) is removed.
IMPORTANT
With this configuration the drive stops with a “FRL” (frequency reference loss fault) when no speed reference input is selected during the start.
To disable the FRL detection, set parameter S3-09 to “0”.
Separate Speed Selection Inputs, Leveling Speed Has Priority (d1-18=2)
The related parameters and the digital input pre-settings are the same as for the High Speed Priority setting
(d1-18=1).
Leveling Speed has Priority and a Leveling Speed Input is Selected (H1-=83)
If d1-18 is set to “2” and one multi-function digital input is set to leveling speed (H1-=83) the inverter decelerates to the leveling speed (d1-17) when the leveling speed selection input is activated. The leveling signal has priority over the selected speed, i.e. the selected speed is disregarded. The selected travel speed must be different from inspection speed.
6-
8
The inverter stops when the leveling speed command is removed.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Leveling speed
Selected speed
Leveling speed has priority
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
Intermed.
Speed 2 d1-11
Intermed.
Speed 3 d1-12
0 1 0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
X
1
0
X
1
1
X
1
1
X
0
1
X
0
0
1
* 0 = disabled, 1 = enabled, X = no meaning
0Hz
0
0
0
0
Leveling Speed Priority is Selected and a Nominal Speed Input is Not Selected (H1-K80))
If d1-18 is set to “2” and no digital input is set to nominal speed selection, the speed reference with speed selection input set is nominal speed (d1-09). When the leveling speed signal is set, the inverter starts to decelerate to the leveling speed. The leveling speed signal has priority over all other speed signals, i.e. the intermediate speed 1 and 2 and the releveling signals are disregarded when leveling speed is selected.
The inverter can be stopped by removing the leveling speed signal or the Up/Down command.
CAUTION: This sequence can be risky if e.g. the speed selection doesn’t work for any reason (broken wire etc.).
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Leveling speed
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
N/A
Intermed.
Speed 1 d1-10
N/A
Intermed.
Speed 2 d1-11
N/A
Intermed.
Speed 3 d1-12
N/A
Relevel.
Speed d1-13
N/A
Leveling
Speed d1-17
N/A
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
0
1
0
0
1
1
0
0
1
0
X
X
1
* 0 = disabled, 1 = enabled, N/A = not available, X = no meaning
The intermediate speed 2 can not be selected using this configuration.
6
6-
9
6
Emergency Stop
If a digital input terminal (H1-) is set to 15 or 17 (emergency stop), this input can be used to fast stop the inverter in the case of emergency. In this case the emergency stop deceleration time set in C1-09 is used. If the emergency stop is input with an NO contact, set the multi-function input terminal (H1-) to 15, if the emergency stop is input with an NC contact, set the multi-function input terminal (H1-) to 17.
After the emergency stop command has been input, the operation cannot be restarted until the Inverter has stopped. To cancel the emergency stop, turn OFF the run command and emergency stop command.
Related parameters
Parameter
No.
C1-09
Name
Emergency stop time
Factory
Setting
Change during
Operation
1.50 s No
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
15
17
Emergency Stop, NO contact
Emergency Stop, NC contact
Function
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes
Yes
Yes
Yes
Closed
Loop
Vector
(PM)
Yes
Yes
6-
10
Inspection RUN
The inspection run can be activated in two ways:
1. A digital input can be used if parameter d1-18 = 1 or 2. Therefore a inspection speed must be set and any of the digital inputs must be set to “Inspection Run Selection” (H1-=84) (see below).
2. A speed reference comparison value (parameter S3-19) decides if inspection run is activated or not. This function work only if parameter d1-18 = 0 or 3 and if the inspection speed command is not assigned to any digital input (H1-K84).
Related parameters
Parameter
No.
d1-14
S3-03
S3-19
Name
Inspection Speed
Inspection Deceleration time
Inspection speed detection upper level
Factory
Setting
Change during
Operation
25.00 Hz
50.00%
0.0 sec
0.00 Hz
No
No
No
V/f
A
A
A
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
-
A
A
A
-
Closed
Loop
Vector
(PM)
-
A
A
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
84 Inspection Run Selection
Function
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes
Inspection Run Selection by Digital Input
The inspection run digital input must be set before the Up/Down signal is set. During the start of the inspection RUN, the normal brake sequence is used and the inverter accelerates to the inspection speed (d1-14). The stop method depends on the setting of parameter S3-03.
Inspection Speed Selection by Comparison Value
Using this function the inverter can detect the inspection speed by the selected speed reference. The speed must be selected before the Up/Down signal is set. If S3-04 < selected speed O S3-19 the selected speed is regarded as inspection speed. The normal start sequence is used, the stop method depends on the setting of parameter S3-03.
Inspection Run Stop Behavior
S3-03 = 0.0 sec., Stop without deceleration ramp
The inverter stops when the Inspection Speed command or the Up/Down command is removed. In this case:
•
The inverter output is cut by baseblock immediately
•
•
The brake open signal is removed immediately
The contactor control output is removed immediately
6
6-
11
6
The falling edge of the Inspection Speed command or UP/DOWN commands triggers the contactor open command, the motor brake close command and the base block.
Inspection RUN
(Stop by Up/Down signal removal)
Inspection RUN
(Stop by Inspection Speed signal removal)
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
S3-03 > 0 sec., Stop with deceleration ramp
The inverter stops when the Inspection Speed command or the Up/Down command is removed. In this case:
•
The output frequency is reduced using the deceleration time set in S3-03.
•
•
When the minimum frequency is reached the brake open signal is removed immediately and the contactor control output is removed immediately
The inverter output is cut after the brake open command removal.
The falling edge of the Inspection Speed command or UP/DOWN commands triggers the deceleration.
Inspection RUN
(Stop by Up/Down signal removal)
Inspection RUN
(Stop by Inspection Speed signal removal)
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
INFO
During inspection run the carrier frequency is reduced to 2 kHz.
6-
12
Brake Sequence
The L7 supports two types of brake sequences, one with torque compensation at start using an analog input value and one without torque compensation at start.
Related Parameters
Parameter
No.
Name
H3-15
S1-01
S1-02
S1-03
S1-04
S1-05
S1-06
S1-07
S1-16
S1-17
S1-18
S1-19
S1-20
S1-21
S1-22
S1-23
S1-24
S1-25
S1-29
S1-30
S1-31
Terminal A1 function selection
Zero speed level
DC injection braking current at start
DC injection braking current at sop
DC injection braking/Zero speed time at start
DC injection braking/Zero speed time at stop
Brake open delay time
Brake close delay time
Run delay time
DC injection current gain at regeneration
DC injection current gain at motoring
Output contactor open delay time
Zero-servo gain
Zero-servo completion width
Starting torque compensation increase time/ starting torque fade-out time
Torque compensation gain in Down direction
Torque compensation bias in Up direction
Torque compensation bias in Down direction
Torque fade out speed level
Torque fade out compensation time
Torque limit fade out time at stop
Factory setting
0 i
50%
50%
0.40 sec
0.60 sec
0.20 sec
0.10 sec
0.10 sec
100%
20%
0.10 sec
5
10
500 ms
1.0
0.0%
0.0%
0.0 Hz
1000 msec
0 msec
Change during operation
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
V/f
-
-
-
-
-
-
-
-
-
-
A
A
-
A
A
-
A
1.2 Hz
A
A
A
A
-
-
-
-
-
-
-
Control Method
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
-
-
A
0.5 Hz
A
A
A
A
A
A
-
A
A
-
A
A
A
0.1 Hz
-
-
A
A
A
A
A
A
-
A
A
-
A
A
Closed
Loop Vector (PM)
A
A
0.5 Hz
A
A
-
-
A
A
A
A
A
A
-
A
A
A
A
A
A
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set Value Function
80 to 84
86
Speed selection inputs (refer to
page 6-5, Speed Selection Sequence Using Digital
)
Contactor closed answer back signal
Multi-function Digital Outputs (H2-01 to H2-03)
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
Yes Yes Yes
Yes Yes Yes
Set Value
33
40
41
Zero servo end
Brake release command
Output contactor close command
Function
V/f
-
Yes
Yes
Control Methods
Open
Loop
Vector
-
Yes
Yes
Closed
Loop
Vector
Yes
Yes
Yes
Closed
Loop
Vector
(PM)
Yes
Yes
Yes
6
6-
13
6
Brake Sequence without torque compensation at start
To use the brake sequence without torque compensation at start,
•
•
the Terminal A1 function must be set to 0 (H3-15 = 0, speed reference input) the AI-14B Ch2 and Ch3 input functions must not be set to 14. (H3-05/09
≠ 14, torque reference not selected)
The figure below shows the timing chart for this brake sequence.
Selected Speed
S1-04
Zero servo/
DC Injection at start
Leveling Speed
S1-05
Zero servo/
DC inhection at stop
Speed
RUN
Inverter Hardware BB D/I
Contactor Control D/O
Contactor Confirmation D/I
Brake Open Command t1 t2 t3 t4 t5 t6 t7
Fig 6.2 Timing chart of Brake sequence without torque compensation at start t8 t9
The timing chart above is divided in time zones. The following table explains the sequence in each time zone.
Timing Description
The inverter gets the direction signal (UP/DOWN) t1 t2 t3 t4 t5 t6 t7 t8 t9
The inverter gets the hardware base block disable signal (Not BB condition).
The inverter receives the speed reference signal.
The inverter sets the contactor closed signal.
The inverter waits for the contactor confirmation signal. If no digital input is set to contactor confirmation signal (H1-=86), the sequence is proceeded after exceeding the operation start delay time (S1-16).
When the RUN delay time (S1-16) has elapsed, DC injection (Open Loop) or zero servo operation (position lock in
Closed Loop) is started.
When the brake open delay time (S1-06) has elapsed, the inverter sets the brake open command.
The inverter keeps DC injection/zero speed operation until
* the time S1-04 – S1-06 has elapsed if S1-06 < S1-04 or
* the time S1-06 has elapsed if S1-06 > S1-04 (try to avoid this setting since the motor could be driven against the brake)
The speed is increased to the selected speed and is kept constant until the leveling speed is selected.
The speed is decreased to the leveling speed and is kept constant until the stop signal is given (depending on d1-18 either
Selection Sequence Using Digital Inputs
The speed is decreased to the zero speed level.
When the zero speed level is reached (S1-01), the DC injection (Open Loop) or zero servo operation (position lock in
Closed Loop) is applied for the time set in S1-05.
When the brake close delay time (S1-07) has elapsed, the brake open command is removed.
The inverter continues DC Injection (Open Loop) or zero speed operation (Closed Loop) until the time S1-06 – S1-07 has elapsed. After that the inverter output is shut down and the hardware base block signal must be set.
After the output contactor open delay time (S1-19) has elapsed, the output contactor close signal is removed.
6-
14
Brake Sequence with Torque Compensation at Start
(Closed Loop Vector for IM and PM only)
Torque Compensation function
If a load measuring device is installed in the elevator, an analog input can be used to input a torque compensation value to the inverter. This function requires Closed Loop Vector control for IM or PM.
The input torque compensation value is latched when the direction command is given. At the start it is increased from zero to the latched value using the torque increase time set in parameter S1-22. The torque compensation value fades out to 0 using the time constant S1-30 after the speed has reached the torque compensation fade out level.
The torque compensation function can be adjusted using the parameters shown in the block diagram below.
Adjust the parameter so that the torque compensation value is zero when the elevator is balanced.
terminal A1
H3-15=1
H3-16
%
Torque compensation bias during raising
S1-24
+ +
UP direction torque compensation
Torque compensation
H3-17
0 10v
S1-23
Torque compensation gain
+ during lowering
S1-25
+
DOWN direction
Torque compensation bias during lowering
The torque compensation input source can be selected as follows:
•
the analog input A1 can be used, if b1-01 is not set to 1 (speed reference source is not the A1 input) and the
A1 function is selected for torque compensation (H3-15=1)
•
•
the channel Ch1 of an AI-14B option card can be used, if b1-01 is not set to 1 (speed reference source is not the A1 input) and the A1 function is selected for torque compensation (H3-15=1) one of the input channels Ch2 or Ch3 of an AI-14B option card can be used when the input function for is set to “Torque Compensation” (H3-05 or H3-09=14). The setting of b1-01 has no influence here.
Brake Sequence
The figure below shows the timing chart for this brake sequence.
Selected Speed
S1-04
Zero speed control at start
Torque compensation
fade out level S1-29
Leveling Speed
Speed
Torque comp level at start
300% Torque
Comp
Torque compensation fade out using S1-30 when S1-29 is reached
Torque Comp increase time
S1-22
RUN
Inverter Hardware BB D/I
Contactor Control D/O
Contactor Confirmation D/I
Brake Open Command t1 t2 t3 t4 t5 t6 t7
Fig 6.3 Timing chart of Brake sequence with torque compensation at start
S1-05
Zero servo control at stop t8 t9
6
6-
15
6
The timing chart above is divided in time zones. The following table explains the sequence in each time zone
Timing Description
The inverter gets the direction signal (UP/DOWN) t1 t2 t3 t4 t5 t6 t7 t8 t9
The inverter gets the hardware base block signal disable signal (Not BB condition).
The inverter receives the speed reference signal.
The inverter sets the contactor close signal.
The inverter waits for the contactor confirmation signal. If no digital input is set to contactor confirmation signal (H1-=86), the sequence is proceeded after exceeding the operation start delay time (S1-16).
The zero speed control operation is started.
The analog torque compensation input is latched and the torque compensation value is increased from zero to the latch value using the time constant set in parameter S1-22.
After reaching the torque compensation level at start, the inverter sets the brake open command.
The brake opens and the zero speed operation (no position lock) is continued until S1-04 has elapsed.
The speed is increased to the selected speed and is kept constant until the leveling speed is selected.
During acceleration, when the torque fade out speed level S1-29 is reached, the torque compensation value is fade out to 0 using the time constant set in S1-22.
The speed is decreased to the leveling speed and is kept constant until the stop signal is given (depending on d1-18 either by removing the direction signal, by removing the leveling signal or by deleting the speed inputs, see
).
The speed is decreased to the zero speed level.
When the Zero Speed Level (S1-01) is reached, zero servo operation (position lock in Closed Loop) is applied for the time set in S1-05. When the brake close delay time (S1-07) has elapsed, the brake open command is removed.
The inverter continues the zero speed operation until the time S1-06 – S1-07 has elapsed. After that the inverter output is shut down and the hardware base block signal must be set.
After the output contactor open delay time (S1-19) has elapsed, the output contactor close signal is removed.
Torque Limit Fade Out Function (Closed Loop Vector for PM)
The torque limit fade out function smoothly reduced the torque limit to 0 after the zero speed time at stop has elapsed. It thereby can help to prevent shocks or vibrations when the motor stops and the brake is closed. The used time constant can be set in parameter S1-31. The function can be used in Closed Loop Vector control for
PM motors only (A1-02 = 6).
Zero Speed Control / Zero Servo (position lock)
In Closed Loop Vector control the inverter uses zero speed or zero servo control during the brake open or close procedure.
Zero Speed Control:
The inverter keeps the motor speed at zero, a roll-back is not compensated. This method is used for the start with a torque compensation value by analog input. The strength of the control can be tuned using the ASR
page 6-32, Automatic Speed Regulator (ASR) (Closed Loop Vector only)
ing details.
Zero Servo Control:
The inverter tries to keep the rotor position, i.e. a roll back is compensated. This method is used for the start when no torque compensation is used and always for during stop (without and with torque compensation).
Additionally to the ASR parameters C5- the zero servo control can be tuned using the parameter S1-20
(Zero servo gain).
•
•
Increase S1-20 if there is a rollback when the brake opens.
Decrease S1-20 if vibrations occur when the zero servo function is active.
If a digital output is set to “Zero Servo End” (H2-=33), this output can be used to signalize, that the rotor position is within a certain bandwidth around the zero position which can be set in parameter S1-21 (the bandwidth is set in PG pulses and must be set 4 times of the allowable actual PG pulses).
6-
16
Short Floor Operation
The short floor operation is activated if the leveling speed command is set before the nominal speed was reached. The L7 inverter supports 2 methods of short floor operation:
•
Simple short floor operation which can be enabled by setting S3-01 = 1.
When the leveling speed input is set and the reached speed is higher than 40% of the nominal speed, the inverter decelerates to 40% and keeps this speed for a calculated time before it decelerates to the leveling speed and finally stops. If the reached speed is below 40% of the nominal speed, the inverter accelerates to
40% speed and keeps it for a calculated time before it decelerates to the leveling speed.
If the leveling input is set during constant speed run and the speed reference is lower than 40% of the nominal speed, the speed is hold for a calculated time in order to minimize the leveling distance. If the speed reference is higher than 40% but lower than the nominal speed, the speed is decreased to t 40% first, is hold for a calculated time an then decreased to the leveling speed.
•
Advanced short floor operation which can be enabled by setting S3-01 = 2.
If the leveling speed command is set the inverter calculates the optimal speed using the speed reference, two gain factors (S3-21/22) and a time constant (S3-20). If the leveling input is set before the optimal speed has been reached, the inverter accelerates to the optimal speed and keeps it for the time constant S3-
20. If the leveling input is set when the optimal speed was exceeded, the inverter keeps the reached speed for a certain time before it decelerates to the leveling speed.
The table below shows the behavior of the short floor functions under different conditions.
Condition Standard Short Floor
Leveling Signal before 40% of the nominal speed has been reached v
Nominal
Advanced Short Floor
Leveling speed signal before V
Opt
is reached
V
Nominal
S3-20
V
Opt
40% x
V
Nominal
During Acceleration
V
Leveling
V
Leveling f out f out
Leveling command
Leveling Signal after 40% of the nominal speed has been reached.
Leveling command
Leveling speed signal after V
Opt
has been reached
V
Nominal v
Nominal
40% x
V
Nominal
V
Opt
Optimal speed profile
(S2-20 calculated)
V
Leveling f out
V
Leveling
Leveling command f out
Leveling command
6
6-
17
6
Condition Standard Short Floor
Leveling command during run with constant speed higher than 40% v
Nominal
40% x
V
Nominal
Advanced Short Floor
During Run with constant speed
V
Leveling f out
Leveling command
Leveling command during run with constant speed lower than 40% v
Nominal
40% x
V
Nominal
V
Leveling f out
Leveling command
Related parameters
Parameter
No.
d1-09 d1-18
S3-01
S3-04
S3-05
S3-20
S3-21
S3-22
Name
Nominal Speed
Speed reference priority selection
Short floor operation
Nominal / Leveling Speed detection level
Nominal speed for short floor calculation
Minimum constant speed time
Distance calculation acceleration time gain
Distance calculation deceleration time gain
No effect
Factory
Setting
Change during
Operation
50.00 Hz
100.00%
1
0
0.0 Hz
0.0Hz
0.0 sec.
150.0%
150.0%
No
No
No
No
No
No
No
No
A
A
A
A
A
A
A
Q
-
V/f
A
A
A
A
A
A
A
Q
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
-
A
A
A
A
A
A
A
Q
-
A
A
A
A
A
A
Q
A
Simple Short Floor Operation Setup
•
•
•
The short floor function can be activated by setting parameter S3-01 to 1.
If parameter d1-18 is set to 0 or 3 (multispeed input), the set value of parameter S3-05 is taken as nominal speed reference for the short floor calculation. Additionally it is required to use the nominal/leveling speed detection (refer to
page 6-6, Nominal / Leveling Speed Detection with Multi Speed Inputs
).
If parameter d1-18 is set to 1 or 2 (dedicated speed inputs), the value of parameter d1-09 is taken as nominal speed. The set value of S3-05 has no meaning. The nominal/leveling speed detection must not be used.
Advanced Short Floor Operation Setup
•
•
•
The advanced short floor operation can be activated by setting parameter S3-01 to 2.
If parameter d1-18 is set to 0 or 3 (multispeed input), the speed reference value, which was selected at the start, is taken as nominal speed for the speed pattern calculation. Parameter S3-04 is used for the leveling speed detection (refer to
).
If parameter d1-18 is set to 1 or 2 (dedicated speed input), the value of parameter d1-09 is taken as nominal speed for the speed pattern calculation.
6-
18
Setup the Acceleration and Deceleration Gain (S3-21, S3-22)
These parameters are used for the optimal speed calculation to compensate the S-curves (S-curves are not considered in the optimal speed calculation).
•
Increase the gains S3-21 and S3-22 if the leveling time is too short or the calculated optimal speed is too high.
•
Decreases the gains S3-21 and S3-22 if the leveling time is too short of the calculated optimal speed is too low.
IMPORTANT
1. S-Curves are not considered in the optimal speed calculation and have to be compensated by the gains S3-21 and S3-22.
2. A too low gain setting can result in a too high optimal speed and too short leveling time. Very low settings can lead to an overrun. Do not set the values lower than 100% (100% means, that the Scurve is not compensated.
3. If parameter d1-18 is set to 0 or 3 and the leveling speed input is released during short floor operation, the inverter accelerates or decelerates to the selected reference speed.
4. If the Dwell function (b6 parameters) is activated, the dwell function is performed during short floor operation but it is not considered in the optimal speed calculation. The influence of the Dwell function must be compensated using the gains S3-21 and S3-22.
5. The advanced short floor function does not work during rescue operation and inspection run.
6. If the speed reference is input using an analog input the advanced short floor function should not be used.
7. If the advanced short floor function is used, the following parameter settings should be in given range:
9.6 Hz
O
E1-04
O
100 Hz
4.8 Hz
O
d1-08
O
100Hz
0.1 sec.
O
C1
O
50 sec.
6
6-
19
Acceleration and Deceleration Characteristics
6
Setting Acceleration and Deceleration Times
The acceleration time indicates the time to increase the speed from 0% to 100% of the maximum speed set in
E1-04. The deceleration time indicates the time to decrease the speed from 100% to 0% of E1-04.
Four separate acceleration and deceleration times can be set. They can be switched over between using:
•
digital input signals
•
the automatic accel./decel. time switch over function with a changeable switching speed level
The display unit and the setting range for the times can be selected between 0.0 sec. or 0.00 sec.
Related Parameters
Parameter
No.
C1-01
C1-02
C1-03
C1-04
C1-05
C1-06
C1-07
C1-08
C1-10
C1-11
S1-26
Name
Acceleration time 1
Deceleration time 1
Acceleration time 2
Deceleration time 2
Acceleration time 3
Deceleration time 3
Acceleration time 4
Deceleration time 4
Acceleration/deceleration time setting unit
Deceleration time switching frequency
Dwell at start speed reference
Factory
Setting
Change during
Operation
1.5 sec
No
No
No
No
No
Yes
Yes
Yes
Yes
1
0.0 Hz
0.00%
0.0 Hz
No
No
A
A
A
A
A
A
Q
Q
-
-
A
Q
V/f
A
A
A
A
A
A
Q
A
Q
-
A
A
A
A
A
A
A
Q
A
Q
-
-
Control Methods
Open
Loop
Vector
Q
Closed
Loop
Vector
Q
Closed
Loop
Vector
(PM)
Q
A
A
A
A
A
A
Q
A
-
Q
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
7 Acceleration/Deceleration switch over 1
1A Acceleration/Deceleration switch over 2
Function
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes
Yes
Yes
Yes
Closed
Loop
Vector
(PM)
Yes
Yes
Setting Acceleration and Deceleration Time Units
Set the acceleration/deceleration time number od decimals using C1-10. The factory setting is 1.
Set value
0
1
Details
The acceleration/deceleration time setting range is 0.00 to 6000.0 in units of 0.01 s.
The acceleration/deceleration time setting range is 0.00 to 600.00 in units of 0.1 s.
6-
20
Switching Over the Acceleration and Deceleration Time Using Multi-Function Input
Commands
When two digital input terminals are set to “Accel./Decel. time switch over 1 and 2” (H1-=7 and 1A), the acceleration/deceleration times can be switched over even during operation by a binary combination of the inputs. The following table shows the acceleration/deceleration time switching combinations.
Acceleration/Deceleration
Time Selection 1 Terminal
OFF
Acceleration/Deceleration
Time Selection 2 Terminal
OFF
Acceleration Time
C1-01
Deceleration Time
C1-02
ON
OFF
ON
OFF
ON
ON
C1-03
C1-05
C1-07
C1-04
C1-06
C1-08
Automatic Deceleration Time Switch Over Using a Speed Level
The deceleration times C1-02 and C1-08 can be switched over automatically at a certain speed which can be set in parameter C1-11.
shows the working principle of the function.
Set C1-11 to a value other than 0.0 Hz. If C1-11 is set to 0.0 Hz, the function will be disabled.
Output
Frequency
Decel. time
Switching Freq.
C1-11
C1-01 C1-02
When output frequency ≥ C1-11the deceleration time 1 (C1-02) is used.
When output frequency < C1-11the deceleration time 4 (C1-08) is used.
C1-08
Fig 6.4 Acceleration/deceleration Time Switching Frequency
Dwell at Start Function (Closed Loop Vector only)
The Dwell function can be used to reduce a staring jerk caused by high static friction.
After a start command, the output frequency is increased up to the Dwell speed set in parameter S1-26 using the acceleration time C1-07. As soon as the motor starts turning and the motor speed (PG feedback) reaches the acceleration time switching level C1-11, the acceleration is continued using the selected acceleration time starting with the S-curve set in parameter C2-01.
RUN
C1-02
No S-Curve
C1-07
C1-11
C2-01
S1-26
6
Fig 6.5 Dwell at start function
Note: When C1-11 is set much higher than S1-26, the motor speed cannot reach C1-11 and the motor can not accelerate to the selected speed. Therefore always set C1-11 equal or lower than S1-26!
6-
21
6
Acceleration and S-curve Settings
Five different S-curve times are used to reduce the jerk when the speed changes.
Related Parameters
Parameter
No.
C2-01
C2-02
C2-03
C2-04
C2-05
Name
S-curve characteristic time at acceleration start
S-curve characteristic time at acceleration end
S-curve characteristic time at deceleration start
S-curve characteristic time at deceleration end
S-curve characteristic time below leveling
Factory
Setting
Change during
Operation
0.5 s
0.5 s
0.5 s
0.5 s
0.5 s
No
No
No
No
No
Q
Q
Q
Q
Q
V/f
Q
Q
Q
Q
Q
Control Methods
Open
Loop
Vector
Q
Q
Q
Q
Q
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
Q
Q
Q
Q
Q
shows the influence of the different S-curve times.
C2-02
C2-03
C2-04
C2-01
C2-05
Leveling Speed
Fig 6.6 S-curve settings
Output Speed Hold (Dwell Function)
The dwell function holds the speed temporarily.
Related Parameters
Parameter
No.
b6-01 b6-02 b6-03 b6-04
Dwell frequency at start
Dwell time at start
Dwell frequency at stop
Dwell time at stop
Name
Factory
Setting
Change during
Operation
0.0 Hz
0.0 s
0.0 Hz
0.0 s
No
No
No
No
A
A
A
A
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
A
6-
22
Applying an Output Speed Dwell
The dwell function at start is applied when the speed level set in parameter b6-01 is reached. The dwell speed is kept for the time set in parameter b6-02. The dwell function at stop is applied when the speed reaches the level set in parameter b6-03. The dwell speed is kept for the time set in parameter b6-04. The setting is shown
.
Run command
Output frequency
ON
OFF b6-01 b6-03
Time b6-02 b6-04
Fig 6.7 Output Frequency Dwell Settings
Stall Prevention During Acceleration
The Stall Prevention During Acceleration function prevents the motor from stalling if the load is too heavy.
If L3-01 is set to 1 (enabled) and the Inverter output current reaches 85% of the set value in L3-02, the acceleration rate will begin to slow down. When L3-02 is exceeded, the acceleration will stop.
If L3-01 is set to 2 (optimal adjustment), the motor accelerates so that the current is held at the level set in L3-
02. With this setting, the acceleration time setting is ignored.
Related Parameters
Parameter
No.
L3-01
L3-02
Name
Stall prevention selection during acceleration
Stall prevention level during acceleration
Factory
Setting
Change during
Operation
1
150%
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
-
-
Closed
Loop
Vector
(PM)
-
-
6
6-
23
Time Chart
The following figure shows the output frequency characteristics when L3-01 is set to 1.
Output current
L3-02
85% of L3-02
Stall level during acceleration
Time
Output frequency
6
*1.
*2.
* 1. The acceleration rate is lowered.
* 2. The acceleration is stopped to reduce the output current.
Fig 6.8 Time Chart for Stall Prevention During Acceleration
Time
Setting Precautions
•
•
•
•
Set the parameters as a percentage taking the inverter rated current to be 100%.
Do not increase the stall prevention level unnecessarily. An extremely high setting can reduce the inverter lifetime. Also do not disable the function.
If the motor stalls with the factory settings check the V/f pattern settings (E1-) and the motor setup
(E2-).
If the stall level has to be increased very much to get the elevator running, consider to use a one size bigger inverter.
6-
24
Adjusting Analog Input Signals
Adjusting Analog Frequency References
Using the H3- parameters, the analog input values of terminal A1 or the Channels 1 to 3 of the optional analog input card AI-14B can be adjusted.
Related Parameters
H3-09
H3-10
H3-11
H3-12
H3-15
H3-16
H3-17
H3-01
H3-02
H3-03
H3-04
H3-05
H3-06
H3-07
H3-08
Parameter
No.
Name
Frequency reference AI-14B CH1signal level selection
Frequency reference AI-14B CH1 input gain
Frequency reference AI-14B CH1 input bias
AI-14B CH3 signal level selection
AI-14B CH3 function selection
AI-14B CH3 input gain
AI-14B CH3 input bias
AI-14B CH2 signal level selection
AI-14B CH2 function selection
AI-14B CH2 input gain
AI-14B CH2 input bias
Analog input filter time constant for the AI-14B
Terminal A1 function selection
Terminal A1 input gain
Terminal A1 input bias
0
100.0%
0.0%
0.03 s
0
100.0%
0.0%
0
100.0%
0.0%
0
2
100.0%
0.0%
3
Factory
Setting
Change during
Operation
No
Yes
Yes
No
No
Yes
Yes
No
Yes
Yes
No
No
Yes
Yes
No
V/f
-
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
Adjusting Analog Input Signals
The frequency reference can be input from the control circuit terminals using analog voltage. The voltage level at terminal A1 is 0 to +10V. The analog input channels of the AI-14B option card can be used with 0 to
+10V or -10 to +10V.
The input signal levels can be selected using,
•
H3-01 for AI-14B CH1
•
•
H3-04 for AI-14B CH3
H3-08 for AI-14B CH2
The signals can be adjusted using the parameters:
•
H3-02 (Gain) and H3-03 (Bias) for Channel 1 of the AI-14B option card
•
•
•
H3-06 (Gain) and H3-07 (Bias) for Channel 3 of the AI-14B option card
H3-10 (Gain) and H3-11 (Bias) for Channel 2 of the AI-14B option card
H3-16 (Gain) and H3-17 (Bias) for analog input A1
The gain sets the level of the selected input value if 10V is input, the bias sets the level of the selected input value if 0V is input.
6
6-
25
Speed Detection and Speed Limitation
6
Speed Agreement Function
There are eight different types of frequency detection methods available. The digital outputs M1 to M6 can be set to this function and can be used to indicate a frequency detection or agreement to any external equipment.
Related Parameters
Parameter
No.
L4-01
L4-02
L4-03
L4-04
Name
Speed agreement detection level
Speed agreement detection width
Speed agreement detection level (±)
Speed agreement detection width (±)
Factory
Setting
0.0 Hz
2.0 Hz
0.0 Hz
2.0 Hz
Change during
Operation
No
No
No
No
A
A
A
A
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
A
Multifunction Output Settings: H2-01 to H2-03 (M1 – M6 function selection)
The table below shows the necessary H2-01 to H2-03 parameter setting for each of the speed agreement functions. Refer to the timing charts on the following page for details.
f ref
/f out
Agree 1
Function Setting
2 f out
/f set
Agree 1
3
4
5
Frequency detection 1
Frequency detection 2 f ref
/f out
Agree 2 f out
/f set
Agree 2
Frequency detection 3
Frequency detection 4
13
14
15
16
Setting Precautions
•
•
With L4-01 an absolute speed agreement level is set, i.e. a speed agreement is detected in both directions
(Up and Down).
With L4-03 a signed speed agreement level is set, i.e. a speed agreement is detected only in the set direction (positive level
→ Up direction, negative level → Down direction).
6-
26
Time Charts
The following table shows the time charts for each of the speed agreement functions.
Related parameter f ref
/f out
Agree 1
L4-01: Speed Agree Level
L4-02: Speed Agree Width
L4-03: Speed Agree Level +/–
L4-04: Speed Agree Width f ref
/f out
Agree 2 f ref
/f out
Agree
Frequency reference
Output frequency or motor speed
L4-02
Frequency reference
Output frequency or motor speed
L4-04 f out
/f set
Agree
L4-02 f ref
/f out
Agree 1
OFF
ON
(Multi-function output setting = 2) f out
/f set
Agree 1
(ON at the following conditions during frequency agree)
L4-02
L4-01
Output frequency or motor speed
L4-01
L4-02
OFF f out
/f set
Agree 1
ON
(Multi-function output setting = 3)
Frequency (FOUT) Detection 1
(L4-01 > | Output frequency |)
L4-02
L4-04 f ref
/f out
Agree 2
OFF
ON
(Multi-function output setting = 13) f out
/f set
Agree 2
(ON at the following conditions during frequency agree)
L4-04
L4-03
Output frequency or motor speed
OFF ON f out
/f set
Agree 2
(Multi-function output setting = 14)
Frequency (FOUT) Detection 3
(L4-03 > Output frequency)
L4-04
L4-01 L4-03
Output frequency or motor speed
Output frequency or motor speed
L4-01
L4-02
Freq. Detection 1
ON
OFF
(Multi-function output setting = 4)
Frequency
Detection
Frequency (FOUT) Detection 2
(L4-01 < | Output frequency |)
Freq. Detection 3
ON
OFF
(Multi-function output setting = 15)
Frequency Detection 4
(L4-03 < Output frequency)
L4-02
L4-04
L4-01
L4-03
Output frequency or motor speed
Output frequency or motor speed
L4-01
L4-02
Freq. Detection 2
OFF
ON
(Multi-function output setting = 5)
Freq. Detection 4 OFF ON
(Multi-function output setting = 16)
6
6-
27
6
Limiting the Elevator Speed to the Leveling Speed (d1-17)
To use a high speed limit in the UP or DOWN direction to the leveling speed, one of the digital inputs must be set to “High speed limit switch Up” or “High speed limit Down” (H1- = 87/88).
Multifunction Digital Inputs (H1-01 to H1-05)
Set Value
87
88
Function
High speed limit switch (Up direction)
High speed limit switch (Down direction)
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Yes Yes
Closed
Loop Vector (PM)
Yes
Yes
High speed limit switch Up
The high speed limit switch UP function limits the speed to the leveling speed when the UP direction signal is given. The DOWN direction has no speed limit.
High speed limit switch Down
The high speed limit switch DOWN function limits the speed to the leveling speed when the DOWN direction signal is given, the UP direction has no speed limit.
6-
28
Improving the Operation Performance
Reducing the Motor Speed Fluctuation (Slip Compensation Function)
When the load is large, the motor slip also increases and the motor speed decreases. The slip compensation function keeps the motor speed constant, regardless of changes in load. When the motor is operating at the rated load, parameter E2-02 (Motor Rated Slip)
× the slip compensation gain value in parameter C3-01 is added to the output frequency. The function can be used in V/f control or Open Loop Vector control.
Related Parameters
Parameter
No.
C3-01
C3-02
C3-03
C3-04
C3-05
Name
Slip compensation gain
Slip compensation delay time
Slip compensation limit
Slip compensation during regeneration
Output voltage limit operation selection
Factory
Setting
1.0
2000 ms
200%
1
0
Change during
Operation
Yes
No
No
No
No
V/f
A
-
A
A
-
A
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A -
Closed
Loop Vector (PM)
-
-
A
-
-
-
-
-
-
Adjusting Slip Compensation Gain (C3-01)
If C3-01 is set to 1.0, the slip compensation value at 100% load is equal to the rated slip set in parameter
E2-02.
If necessary (motor speed is too high or too low) adjust the slip compensation gain as follows:
1. With Open Loop Vector control set E2-02 (Motor Rated Slip) and E2-03 (Motor No-load Current). The motor rated slip can be calculated using the values on the motor nameplate and the following formula: slip (Hz) = Motor rated frequency (Hz) –
The motor data can be set automatically using the autotuning function.
2. With V/f control set C3-01 to 1.0.
3. Apply a load and compare the speed reference and the actual motor speed during run with constant speed.
Adjust the slip compensation gain by 0.1 at a time. If the speed is less than the target value, increase the slip compensation gain, if the speed is higher than the target value, reduce the slip compensation gain.
4. Setting C3-01 to 0.0 disables the slip compensation function.
Adjusting Slip Compensation Primary Delay Time Constant (C3-02)
The slip compensation delay time constant is set in ms. The setting value of C3-02 is 2000ms. Normally, there is no need to change these settings. When the slip compensation responsiveness is low, lower the set value.
When the speed is unstable, increase the set value.
6
6-
29
Adjusting Slip Compensation Limit (C3-03)
Using parameter C3-03 the upper limit for the slip compensation can be set as a percentage, taking the motor rated slip as 100%.
If the speed is lower than the target value but does not change even after adjusting the slip compensation gain, the slip compensation limit may have been reached. Increase the limit, and check the speed again. Always make sure that the value of the slip compensation limit and reference frequency does not exceed the tolerance of the machine.
The following diagram shows the slip compensation limit for the constant torque range and fixed output range.
Slip compensation limit
6
Output frequency
E1-06: Base frequency
E1-04: Maximum output frequency
Fig 6.9 Slip Compensation Limit
Enable the Slip Compensation Function During Regeneration (C3-04)
Enables or disables the slip compensation function during regenerative operation. The factory setting is enabled.
Operation Selection when the Output Voltage is Saturated (C3-05)
Generally the Inverter cannot output a voltage that is higher than the input voltage. If in the high-speed range the output voltage reference for the motor (monitor parameter U1-06) exceeds the input voltage, the output voltage becomes saturated, and inverter cannot respond to speed or load changes. This function automatically reduces the output voltage to avoid voltage saturation.
Thereby the speed control accuracy can be maintained even at high speeds (around the rated speed of the motor). By the lowered voltage the current can be around 10% higher compared to the operation without voltage limiter.
Torque Compensation Function Adjustments
The torque compensation function detects a rising motor load, and increases the output torque.
In V/f control the inverter calculates the motor primary loss voltage using the terminal resistance value (E2-
05) and adjusts the output voltage (V) to compensate insufficient torque at startup and during low-speed operation.
The compensation voltage is calculated by the calculated Motor primary voltage loss
× parameter C4-01.
In Open Loop Vector control the motor excitation current and the torque producing current are calculated and controlled separately. The torque compensation affects the torque producing current only.
The torque producing current is calculated by the calculated torque reference
× C4-01.
6-
30
Related Parameters
Parameter
No.
Name
C4-01
C4-02
Torque compensation gain
Torque compensation delay time constant
Factory
Setting
Change during
Operation
1.00
2000 ms
Yes
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
-
-
Closed
Loop
Vector
(PM)
-
-
Adjusting Torque Compensation Gain (C4-01)
Normally, there is no need to change this setting. If adjustments are necessary do the following:
Open Loop Vector control
•
If the torque response is slow increase the set value.
•
If vibrations occur decrease the set value.
V/f control
•
If the cable is very long, increase the set value.
•
•
If the motor capacity is smaller than the Inverter capacity (max. applicable motor capacity), increase the set value.
If the motor vibrates, reduce the set value.
Setting precautions
•
Adjust this parameter so that the output current during low-speed rotation does not exceed the Inverter rated output current range.
•
Adjust the value in steps of 0.05 only.
Adjusting the Torque Compensation Delay Time Constant (C4-02)
The factory setting depends on the control mode. The factory settings are:
•
V/f control: 200 ms
•
Open loop vector control: 20 ms
Normally, there is no need to change this setting. If adjustments are necessary do the following:
•
If the motor vibrates or if overshooting occurs, increase the set value.
•
If the torque response is slow, decrease the set value.
6
6-
31
6
Starting Torque Compensation Function (C4-03 to C4-05)
A starting torque compensation can be applied to speed up the torque establishment at start in Open Loop Vector control.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
C4-03
C4-04
C4-05
Starting torque compensation value (forward direction)
Starting torque compensation value (reverse direction)
Starting torque compensation time constant
It works like shown in the following diagram.
Forward (Reverse) Run command
ON
OFF
Time constant: C4-05
Time constant: C4-02
C4-03 (forward)
C4-04 (reverse, negative polarity)
Torque compensation volume
0.0
0.0
1 ms
No
No
No
-
-
-
C4-05 x 4
E1-09
Output frequency
E1-09
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
-
-
-
Closed
Loop
Vector
(PM)
-
-
-
Fig 6.10 Time Chart for Starting Torque Frequency
When this function is used, the following should be considered:
•
Both values, C4-03 and C4-04 have to be set.
•
•
•
The compensation works for motoring operation only. It can not be used for regenerative operation.
If the starting torque compensation is used and a large shock is generated at the start, increase the starting torque compensation time constant (C4-05)
The function can be not be used unrestricted for elevators, since the load is not know before the start.
Automatic Speed Regulator (ASR) (Closed Loop Vector only)
In Closed Loop Vector control the automatic speed regulator (ASR) adjusts the torque reference in order to eliminate the deviation between the speed reference and the measured speed (PG feedback). The ASR settings determine the motor speed accuracy and stability.
Frequency
Reference
Motor
Speed
+
-
C5-01/03/09
P
I
C5-02/04/10
C5-08
I-Limit
+
+
Delay
Time
Torque
Limits
Torque
Reference
Fig 6.11 ASR Block Diagram
6-
32
Related Parameters
Parameter
No.
C5-01
C5-02
C5-03
C5-04
C5-07
C5-08
C5-09
ASR proportional (P) gain 1
ASR integral (I) time 1
Name
ASR proportional (P) gain 2
ASR integral (I) time 2
ASR switching frequency
ASR integral limit
ASR proportional (P) gain 3
Factory
Setting
Change during
Operation
40.00
12.00
0.500 sec.
0.300 sec.
20.00
6.00
0.500 sec.
0.0 Hz
2.0%
400%
40.00
12.00
0.500 sec.
0.300 sec.
5.00
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
V/f
-
-
-
-
-
-
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
-
-
-
-
-
-
-
-
Q
A
Q
-
A
-
-
Q
Q
Q
Q
-
Closed
Loop
Vector
(PM)
-
Q
-
Q
-
-
Q
-
-
A
Q
Q
Q
-
Q
-
Q
-
C5-10
C5-11
ASR integral (I) time 3
ASR gain for encoder offset tuning
ASR Gain and Integral Time Adjustments
There are three sets of ASR gain and integral times, one for the maximum speed (C5-01/02), one for the minimum speed at acceleration (C5-03/04) and one for the minimum speed at deceleration (C5-09/10) (see the figure below).
ASR P, I
ASR P, I
C5-03 ASR Gain 2
C5-04 ASR I time 2
C5-09 ASR Gain 3
C5-10 ASR I time 3
C5-01 ASR Gain 1
C5-02 ASR I time 1
C5-01 ASR Gain 1
C5-02 ASR I time 1
6
0Hz C5-07 E1-04
Speed
During Acceleration
0Hz C5-07 E1-04
Speed
During Deceleration
When the ride starts with the nominal speed selected, the ASR P gain and I time change from C5-03/04 to C1-
01/02 at nominal speed. When the speed selection changes to leveling speed, the P gain and I time are changed from C1-01/02 to C1-09/10.
If parameter d1-18 is set to 0 or 3, the nominal/leveling speed detection function must be enabled (refer to
page 6-6, Nominal / Leveling Speed Detection with Multi Speed Inputs
) in order to use the ASR 3 settings.
Adjusting ASR Proportional Gains (C5-01/03/09)
The gain settings determine how much the ASR input (= speed deviation) is amplified in order to eliminate the speed deviation. The responsiveness of the ASR is increased when the gain setting is increased but oscillations can occur when this setting is too high.
•
•
Increase C5-03 if the ASR is too slow at start or very low frequencies, decrease it if vibrations occur.
Increase C5-01 if the ASR is too slow at high speed or if overshooting occurs at speed changes in the high speed area, decrease it if vibrations occur
6-
33
•
Increase C5-09 if ASR is slow in the low speed area or if undershooting occurs at leveling speed. If vibrations occur in the low speed area during deceleration decrease the value.
Adjusting ASR Integral Times (C5-02/04/10)
The integral time determines how fast the ASR input is integrated in order to eliminate the speed deviation.
Lengthening the integral time lowers the responsiveness of the ASR and the speed accuracy when the load changes suddenly. Oscillations can occur if the setting of this value is too low.
•
•
•
Decrease C5-02 if a speed deviation is compensated too slow at high speeds or if overshooting occurs at speed changes in the high speed area. Increase it if vibrations occur.
Decrease C5-04 if a speed deviation is compensated too slow at start or at very low frequencies. Increase it if vibrations occur.
Decrease C5-10 if a speed deviation is compensated too slow in the low speed area at leveling or if undershooting occurs at leveling speed. If vibrations occur in the low speed area during deceleration increase the value.
Adjusting the ASR Gain for Encoder Offset Tuning (C5-11)
During the encoder offset tuning for Hiperface y
or EnDat uses the value of parameter C5-11 as ASR gain.
•
•
Decrease C5-11 if vibrations occur during the tuning and repeat the tuning.
Increase C5-11 if the accuracy of the tuning is low and repeat the tuning.
6
Stabilizing Speed (Automatic Frequency Regulator) (Open Loop Vector)
The speed feedback detection control (AFR) function controls the stability of the speed when a load is suddenly applied or removed. It calculates the amount of speed fluctuation using the torque current (Iq) feedback value and compensates the output frequency with the amount of fluctuation. f ref f out
6-
34
I q
Fig 6.12 AFR Control Loop
Related Parameters
Parameter
No.
n2-01 n2-02
Name
Factory
Setting
Change during
Operation
Speed feedback detection control (AFR) gain 1.00
Speed feedback detection control (AFR) time constant 1 50 ms
No
No
V/f
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
-
-
Closed
Loop
Vector
(PM)
-
-
Setting the AFR Gain (n2-01)
Normally there is no need to change this setting. If adjustments are necessary, do the following:
•
If hunting occurs increase n2-01.
•
If the response is too low, decrease n2-01.
Adjust the setting by 0.05 at a time while checking the response.
Setting the AFR Time Constants (n2-02)
Parameter n2-02 sets the time constant for the AFR control. If adjustments are necessary,
•
Increase the setting if hunting occurs or the speed is over-compensated
•
Decrease the setting if the compensation is too slow
Normally there is no need to change this setting.
Inertia Compensation (Closed Loop Vector Only)
Feed Forward Control is used to eliminate the speed overshoot or undershoot by compensating inertia effects.
The function can be enabled using parameter n5-01.
Related Parameters
Parameter
No.
n5-01 n5-02 n5-03 n5-05
Name
Feed forward control selection
Motor acceleration time
Feed forward proportional gain
Motor acceleration time auto tuning
Factory setting
1
0 kVA dependent
1.0
0
Change during operation
No
No
No
No
V/f
-
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
-
-
-
A
A
A
-
A
Closed
Loop
Vector
(PM)
-
A
A
A
A
Adjustments
Motor acceleration time (n5-02)
The motor acceleration time n5-02 is the time, which is needed to accelerate the to the rated speed with the rated torque of the motor. The time can be estimated like follows:
•
•
Make the general setup (V/f pattern, Motor Setup, etc.)
Balance the elevator (car in middle position, Car weight = Counter weight)
•
•
•
•
Set the torque limits to 100% using the L7- parameters.
Set the acceleration time very short (the inverter must reach the torque limit very fast).
Start in any direction and measure the time from zero speed to top speed.
Set this time in n5-02.
Feed Forward Gain (n5-03)
This value usually has not to be changed.
•
Increase the gain to improve the responsiveness to the speed reference.
•
Decrease the gain if vibrations occur.
Motor Acceleration Time Auto Tuning (n5-05)
The motor acceleration time n5-02 can be calculated by an auto tuning function. It sets the internal acceleration time to 0.1 sec., disabled the S-curve and sets the torque limit to 100%. After that a start in each direction must be performed. The measured acceleration times are used to calculate the n5-03 value.
Before the n5-02 auto tuning is performed, the motor data autotuning and the general setup should have been finished. Do the tuning with the factory settings for the n5- parameters.
6
6-
35
Use the following procedure:
1. Set n5-05 to “1” to enable the auto tuning and go back to the speed reference display.
2. Set the base block input.
3. Enable the inspection speed input. “FFCAL” will blink in the display to signalize that the calculation is active.
4. Set an UP command. The inverter will accelerate the motor up to the nominal speed. Release the UP command a few seconds after the top speed has been reached.
5. When the motor has stopped, apply a DOWN command. The inverter will accelerate the motor in the opposite direction to the nominal speed. Release the DOWN command a few seconds after the nominal speed has been reached.
To abort the tuning set parameter n5-05 to “0”.
IMPORTANT
1. The order of giving the UP or DOWN command has no influence.
2. n5-01 should not be changed from the factory value for the tuning.
3. After the run in both directions is finished, parameter n5-05 is automatically set back to “0”.
4. The autotuning will be performed only if the inspection speed input is set.
5. Do not change the mechanical constants (load, inertia) between the runs.
6
Automatic Current Regulator (ACR) Tuning
The ACR controller consists of two PI control loops, one for the d-axis and one for the q-axis current. The
ACR parameters can be accessed in the Closed Loop Vector control for PM mode only.
Related Parameters
Parameter
No.
n8-29 n8-30 n8-32 n8-33
Name
ACR q axis proportional gain
ACR q axis integral time
ACR d axis proportional gain
ACR d axis integral time
Factory setting
1000 rad/s
10.0 ms
1000 rad/s
10.0 ms
Change during operation
No
No
No
No
V/f
-
-
-
-
Open
Loop
Vector
-
-
-
-
Closed
Loop
Vector
-
-
-
-
Closed
Loop
Vector
(PM)
A
A
A
A
Adjustments
Normally there is no need to change these values. However, if short cycle vibrations occur which can’t be eliminated by the ASR controller setup, it might help to adjust ACR values like follows:
•
•
If the motor generates very strange high frequency noise (not carrier frequency related), reduce both ACR gains (n8-29 and n8-32) for the same value. If the gain is reduced too much, the performance will be reduced.
If vibrations occur, reduce both integral times (n9-30 and n9-33) for the same value.
6-
36
A/D Conversion Delay Time Tuning
The A/D conversion delay timer sets a delay for the current signal A/D conversion.
Related Parameters
Parameter
No.
n9-60
Name
Current signal A/D conversion delay time
Factory setting
0.0 µsec.
Change during operation
No
V/f
-
Open
Loop
Vector
-
Closed
Loop
Vector
-
Closed
Loop
Vector
(PM)
A
Adjustments
occur during constant speed run, the A/D conversion delay can be increased in order to eliminate the vibrations.
Torque Signal
Motor Speed
Fig 6.13 Oscillations caused by bad A/D conversion adjustment
Improving the Leveling Accuracy by Leveling Speed Slip Compensation
This function can be used in V/f and Open Loop Vector control to improve the leveling accuracy by compensating the motor slip influence at leveling speed.
The inverter measures the current level or torque reference S2-05 sec. after the speed-agree condition (acceleration finished) for the time set in S2-06 and calculates the average value to estimate the load. This value is
used for the calculation of slip which is added to the speed reference at leveling speed (see
).
S2-05 S2-06
6
Speed reference is increased or decreased depending on measured load
Fig 6.14 Slip Compensation Working Principle
6-
37
Related Parameters
Parameter
No.
S2-01
S2-02
S2-03
S3-05
S3-06
S2-07
Name
Motor Rated rpm
Slip Compensation Gain at Motoring
Slip Compensation Gain at Regenerating
Slip Compensation Torque Detection Delay
Slip Compensation Torque Detection Time
Slip Compensation primary Delay Time
Factory setting
1380rpm
0.7
1.0
1.0 sec.
0.5 sec.
200ms
Change during operation
No
No
No
No
No
No
V/f
A
A
A
A
A
-
Open
Loop
Vector
-
A
A
A
A
A
Closed
Loop
Vector
-
-
-
-
-
-
Closed
Loop
Vector
(PM)
-
-
-
-
-
Adjustments
The Slip compensation values can be set separately for motoring and regenerative operation. Before adjusting this function the general setup should have been done (Motor Setup, V/f pattern, Speeds, ASR settings etc.).
To adjust the Slip compensation function do the following in motoring and regenerative mode:
•
•
Set the motor speed in S2-01 if V/f control is used.
Try to measure the actual motor speed during leveling.
•
•
•
If the motor speed is lower than the leveling speed reference increase S2-02 in motoring mode or decrease
S2-03 in regenerative mode.
If the motor speed is higher than the leveling speed reference decrease S2-02 in motoring mode or increase
S2-03 in regenerative mode.
S2-05 and S2-06 should not be modified, except if the stop accuracy is poor and the constant speed time after the speed agree is shorter than S2-05 + S2-06.
6
Field Forcing
The field forcing function controls the motor flux and compensates the flux establishment delay of the motor.
Thereby it improves the motor responsiveness to changes in the speed reference or the load.
Field forcing is applied during all operation conditions except DC Injection.
Using parameter d6-06 a field forcing limit can be applied. A setting of 100% is equal to the no-load current set in parameter E2-03.
Related Parameters
Parameter
No.
d6-03 d6-06
Field forcing selection
Field forcing limit
Name
Factory
Setting
Change during
Operation
0
400%
No
No
V/f
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
Closed
Loop
Vector
(PM)
-
-
6-
38
Adjusting the DC Injection Current
The DC current injection is used in V/f and Open Loop Vector Control in order to hold the motor when the brake is opened or closed.
Related Parameters
Parameter
No.
S1-02
S1-03
S1-17
S1-18
Name
DC injection current level at start
DC injection current level at stop
DC injection gain at stop in regenerative operation
DC injection gain at stop in motoring operation
Factory
Setting
Change during
Operation
50%
50%
100%
20%
No
No
No
No
-
-
A
A
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
-
-
-
-
Closed
Loop
Vector
(PM)
-
-
-
-
Adjusting the DC Injection Current Levels (S1-02/03)
Two different DC injection current levels can be set to start and stop.
•
Increase the corresponding set value when the holding torque during brake open or brake close is too low.
•
Decrease the corresponding set value when the holding torque is enough but e.g. the DC injection noise is too loud.
Adjusting the DC Injection Gains for Stop (S1-17/18)
In Open Loop Vector control two different DC injection current gains for motoring and regenerative operation can be adjusted in order to improve the stopping behavior. The gains are related to the S1-03 set value. The function can be used to equalize jerk effects if the DC injection is too low with motoring load and too high with regenerative load. The load condition (regenerative or motoring) is detected when the inverter is running at another speed than the leveling speed.
•
•
If the DC injection is ok with motoring load but not with regenerative load adjust parameter S1-17.
If the DC injection is ok with regenerative load but not with motoring load adjust parameter S1-18.
6
6-
39
Protective Functions
6
Preventing Motor Stalling During Operation
Stall prevention during operation prevents the motor from stalling by automatically lowering the inverter output frequency when a transient overload occurs while the motor is operating at a constant speed.
Stall prevention during operation can be enabled in V/f control only. If the Inverter output current continues to exceed the setting in parameter L3-06 for 100 ms or longer, the motor speed is reduced. Enable or disable the stall prevention using parameter L3-05. Set the according deceleration times using C1-02 (Deceleration time
1) or C1-04 (Deceleration Time 2).
If the Inverter output current reaches the set value in L3-06 – 2%, the motor will accelerate again to the set frequency.
Related Parameters
Parameter
No.
L3-05
L3-06
Name
Stall prevention selection during running function selection
Stall prevention level during running
Factory
Setting
Change during
Operation
1
150%
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
Closed
Loop
Vector
(PM)
-
-
Precautions
If the motor capacity is smaller than the Inverter capacity or the motor stalls when operating at the factory settings, lower the stall prevention level during operation.
Setting Precautions
•
•
•
•
Set the parameters as a percentage taking the inverter rated current to be 100%.
Do not increase the stall prevention level unnecessarily. An extremely high setting can reduce the inverter lifetime. Also do not disable the function.
If the motor stalls with the factory settings check the V/f pattern (E1-) and the motor setup (E2-).
If the stall level has to be increased very much to get the elevator running, check the mechanical system or consider using a one size bigger inverter.
Motor Torque Detection / Car Stuck Detection
The inverter provides a torque detection function to detect overtorque (Car stuck) or undertorque. An alarm signal can be output to the digital output terminals M1-M2, M3-M4, or M5-M6.
To use the overtorque/undertorque detection function, set B, 17, 18, 19 (overtorque/undertorque detection NO/
NC) in one of the parameter H2-01 to H2-03 (digital output terminals M1 to M6 function selection).
Overtorque/undertorque is detected by:
•
observing the output current in V/f control (the inverter rated output current is equal to 100%).
•
observing the torque reference value in Open Loop and Closed Loop Vector control (the motor rated torque is equal to 100%).
6-
40
Related Parameters
Parameter
No.
L6-01
L6-02
L6-03
L6-04
L6-05
L6-06
Name
Torque detection selection 1
Torque detection level 1
Torque detection time 1
Torque detection selection 2
Torque detection level 2
Torque detection time 2
Factory
Setting
Change during
Operation
4
150%
10.0 s
0
150%
0.1 s
No
No
No
No
No
No
A
A
A
A
A
A
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
A
A
A
Multi-function Output (H2-01 to H2-03)
Set
Value
B
17
18
19
Function
Overtorque/undertorque detection 1 NO
(NO contact: Overtorque detection and undertorque detection enabled when contact is ON)
Overtorque/undertorque detection 1 NC
(NC contact: Overtorque detection and undertorque detection enabled when contact is OFF)
Overtorque/undertorque detection 2 NO
(NO contact: Overtorque detection and undertorque detection enabled when contact is ON)
Overtorque/undertorque detection 2 NC
(NC contact: Overtorque detection and undertorque detection enabled when contact is OFF)
Yes
Yes
Yes
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
Yes Yes Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
L6-01 and L6-04 Set Values and Operator Display (JVOP-160-OY only)
The relationship between alarms displayed on the digital operator when overtorque or undertorque is detected, and the set values in L6-01 and L6-04, is shown in the following table.
Set
Value
0
Function
Overtorque/undertorque detection disabled.
Operator Display
Overtorque/
Undertorque
Detection 1
Overtorque/
Undertorque
Detection 2
– –
1
2
3
4
5
6
7
8
Overtorque/Car stuck detection only with speed agree; operation continues (warning is output).
Overtorque/Car stuck detected continuously during operation; operation continues
(warning is output).
OL3 flashes
OL3 flashes
OL4 flashes
OL4 flashes
Overtorque/Car stuck detection only with speed agree; output is stopped upon detection.
Overtorque/Car stuck detected continuously during operation; output is stopped upon detection.
OL3 lights up
OL3 lights up
Undertorque detection only with speed agree; operation continues (warning is output).
UL3 flashes
OL4 lights up
OL4 lights up
UL4 flashes
Undertorque detected continuously during operation; operation continues (warning is output).
UL3 flashes UL4 flashes
Undertorque detection only with speed matching; output is stopped upon detection.
UL3 lights up UL4 lights up
Undertorque detected continuously during operation; output is stopped upon detection. UL3 lights up UL4 lights up
6
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41
Timing Charts
show the timing charts for over torque and under torque detection.
Motor current (output torque)
L6-02 or L6-05
Over torque detection 1 NO or over torque detection 2 NO
L6-03 or
L6-06
L6-03 or
L6-06
*Overtorque detection switch off bandwidth is approximately 10% of the Inverter rated output current (or motor rated torque).
Fig 6.15 Overtorque Detection
Motor current (output torque)
L6-02 or L6-05
6
Under torque detection 1 NO or under torque detection 2 NO
L6-03 or
L6-06
L6-03 or
L6-06
*Undertorque detection switch off bandwidth is approximately 10% of the Inverter rated output current (or motor rated torque).
Fig 6.16 Undertorque Detection
Car Stuck Detection (OL3, Using the Overtorque detection)
The Over torque detection function can be used to detect a stuck car. The torque detection function 1 can be used for this. Therefore a digital output has to be set to “Over torque detection 1” (H2- = B or 17). Using this with the factory settings a car stuck is detected (output is switched) when the torque/current is higher than
150% for 10 sec. The level can be adjusted in L6-02, the time in L6-03. The output is switched of and an OL3
)
DC Injection/ zero servo speed
Inverter enable (D/I)
Up/Down (D/I)
Selected Speed (D/I)
Fault
Torque is higher than L6-02 detect. time
L6-03
Fig 6.17 Car Stuck fault detection
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42
Limiting the Motor Torque (Torque Limit Function)
This function allows limitation of motor shaft torque independently for each of the four quadrants. The torque limit can be set as a fixed value using parameters or as a variable value using an analog input. The torque limit function can be used with Open Loop Vector and Closed Loop Vector control only.
Related Parameters
Parameter No.
Name
L7-01
L7-02
L7-03
L7-04
L7-06
L7-07
Forward drive torque limit
Reverse drive torque limit
Forward regenerative torque limit
Reverse regenerative torque limit
Torque limit integral time constant
Torque limit integral operation during accel./ decel. selection
* A setting value of 100% is equal to the motor rated torque.
Multi-function Output (H2-01 to H2-03)
Factory Setting
Change during Operation
V/f
300%*
300%*
300%*
300%*
200 ms
0
No
No
No
No
No
No
-
-
-
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
A
A
A
-
Closed
Loop
Vector
(PM)
A
A
A
A
-
A -
Set
Value
30 During torque limit
Function
V/f
No
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes
Setting the Torque Limit Using Parameters
Using L7-01 to L7-04, four torque limits in the following directions can be set individually: Forward drive,
reverse drive, forward regenerative and reverse regenerative (see
)
Output Torque
L7-01
L7-04
Reverse
Regenerative
Forward
Drive
Output Speed
Reverse
Drive
Forward
Regenerative
L7-03
L7-02
Fig 6.18 Torque Limit Parameters
Using a Digital Output to Signalize Operation at the Torque Limit
If a multifunction output is set to this function (H2-01 to H2-03 is set to “30”), the output is switched ON when the motor output torque reaches one of the torque limits.
6
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43
Adjusting the Torque Limit Integral Time (L7-06)
In Open Loop Vector control, during constant speed the limit function works with an integral control part (during acceleration and deceleration just a P-control is used). Normally there is no need to change this setting.
•
•
Increase the setting if vibrations or short cycle oscillations occur when the motor is running at the set torque limit
Decrease the setting if long cycle oscillations occur when the motor is running at the set torque limit.
Enabling the Torque Limit Integral Operation during Accel./Decel. (L7-07)
In Open Loop Vector control an integral operation can be applied to the torque limit function (P-control is standard). This improves the torque limit responsiveness and smoothes the torque limit operation. To enable the integral operation set parameter L7-07 to 1. The integral time set in parameter L7-07 is used.
Setting Precautions
•
•
When the output torque reaches the torque limit, control and compensation of the motor speed is disabled to prevent the output torque from exceeding the torque limit. The torque limit has the priority.
The torque limit accuracy is ±5% at an output frequency of 10 Hz or above. When output frequency is lower than 10 Hz, the accuracy is lower.
6
Motor Overload Protection
The motor can be protected from overload using the built-in electronic thermal overload relay function.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
E2-01
E4-01
E5-02
L1-01
L1-02
Motor 1 rated current
Motor 2 rated current
PM Motor rated current
Motor protection selection
Motor protection time constant
7.00 A
*1
7.00 A
7.31 A
1
1.0 min
No
No
No
No
No
*1. Factory settings depend on Inverter capacity. (The given value is for a 400 V Class Inverter with 3.7 kW.)
Q
Q
Q
Q
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q
Q
Q
Q
A
Q
Q
Q
Q
A
-
-
A
-
Closed
Loop
Vector
(PM)
-
Multi-Function Outputs (H2-01 to H2-03)
Set
Value
1F
Function
V/f
Motor overload (OL1, including OH3) pre-alarm (ON: 90% or more of the detection level) Yes
Control Methods
Open
Loop
Vector
Yes
Closed
Loop
Vector
Yes
Closed
Loop
Vector
(PM)
Yes
Setting the Motor Rated Current (E2-01, E4-01 or E5-02))
Set the rated current value on the motor nameplate in parameters E2-01 (for motor 1), E4-01 (for motor 2) or
E5-02 (PM motor). This set value is the base current for the internal thermal overload calculation.
6-
44
Setting Motor Overload Protection Characteristics (L1-01)
Set the overload protection function in L1-01 according to the used motor.
As the motors thermal behavior depends on the motor type, the thermal motor protection characteristics must be properly selected.
Set L1-01 to:
0: to disable the thermal motor protection function.
1: to enable the thermal motor protection for a fan cooled general purpose motor (self-cooled).
2: to enable the thermal motor protection for an inverter motor (externally cooled).
3: to enable the thermal motor protection for a special vector motor (externally cooled).
5: to enable the thermal motor protection for a permanent magnet motor
Setting Motor Protection Operation Time (L1-02)
The motor protection operation time is the time for that the motor can handle a 150% overload when it was running with the rated load before (i.e. operating temperature was reached before applying the 150% overload). Set the motor protection operation time in L1-02. The factory setting is 60 sec.
shows an example of the characteristics of the electronic thermal protection operation time (L1-02 =
1.0 min., operation at 50 Hz, general-purpose motor characteristics, when L1-01 is set to 1)
Operation time (min.)
Cold start
Hot start
Motor current (%)
E2-01 is set to 100%
Fig 6.19 Motor Protection Operation Time
Setting a Motor Overload Pre-Alarm
If the motor overload protection function is enabled (i.e., L1-01 is set to a value different from 0) and H2-01 to
H2-03 (output terminals M1-M2, M3-M4, and M5-M6 function selection) to 1F (motor overload OL1 prealarm), the motor overload pre-alarm will be output at the selected terminals. If the electronic thermal value reaches minimum 90% of the overload detection level, the output terminal that has been set will be turned ON.
6
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45
Output Current Observation
The inverter can observe the output current and thereby detect e.g a wrong motor contactor sequence or bad motor connection. There are two observation functions, one for the start and one during run.
Related Parameters
Parameter
No.
S1-14
S1-15
SE2 detection time
SE3 detection time
Name
Factory
Setting
Change during
Operation
200 ms
200 ms
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
Closed
Loop
Vector
(PM)
-
-
SE2 fault (SE2, Current observation at start)
The current is measured for the time S1-06 + S1-14 (Brake open delay plus SE2 detection time) after the Up/
Down command input. If it is/falls below 25% of the motor no-load current (E2-03) a SE2 fault is output.
S1-06 + S1-14 must be smaller than S1-04 (DC injection at start).
SE3 fault (SE3, Current observation during Run)
When the acceleration is started (DC injection/Zero Speed time S1-04 after the Up/Down command input), the inverter observes the output current continuously. If it falls below 25% of the motor no-load current (E2-03) a
SE3 fault is output.
6
Over Acceleration Detection (“DV6” Fault Detection)
Using this function an over acceleration of the car caused by too high load or wrong settings can be detected.
The function works in Closed Loop Vector for PM motors only (A1-02 = 6). If an over acceleration is detected, the inverter stops and a “DV6” fault is displayed.
Related Parameters
Parameter
No.
S3-16
S3-17
S3-18
Name
Over acceleration detection level
Over acceleration time constant
Over acceleration detection method
Factory
Setting
Change during
Operation
1.5 m/s²
0.05 sec.
0
No
No
No
V/f
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
-
-
-
-
-
Closed
Loop
Vector
(PM)
A
A
A
Adjusting the Over Acceleration Detection
Over acceleration is detected when the acceleration of the car exceeds the value set in S3-16 for longer than the time set in S3-17. The setting of parameter S3-18 decides the over acceleration is always activate if the power supply is on (S3-16 = 0) or only during run (S3-16 = 1).
Setting parameter S3-16 to 0.0 m/s² disables the over acceleration detection.
IMPORTANT
It is imperative to set up the parameters S3-13, S3-14 and S3-15 (traction sheave diameter, roping and gear ratio) in order to make this function working properly!
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46
Inverter Protection
Inverter Overheat Protection
The Inverter is protected against overheating using a thermistor that detects the heatsink temperature.
When the overheat temperature level is reached the inverter output is switched off.
To prevent a sudden and unexpected stop of the inverter due to an over temperature, an overheat pre-alarm can be output. The temperature level for that pre-alarm can be set in parameter L8-02. Using parameter L8-03 the inverter operation when an over temperature occurs can be selected.
If a multifunction output is set to this function the output is switched ON when the heatsink temperature exceeds the overheat pre-alarm level set in L8-02.
Related Parameters
Parameter
No.
Name
L8-02
L8-03
Overheat pre-alarm level
Inverter overheat (OH) pre-alarm operation selection
*1. The factory setting depends on the inverter capacity.
Factory
Setting
Change during
Operation
95
°C
*1
3
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
A A A
Multifunction Outputs (H2-01 to H2-03)
Set Value
20 Inverter overheat (OH)
Function
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes
6
Input Open Phase Protection
*
This function detects an open input phase by observing the DC bus voltage ripple level.
Related Parameters
Parameter
No.
L8-05
Name
Input open-phase protection selection
Factory
Setting
Change during
Operation
1 No
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
The factory setting is enabled. It is not recommended to disable this function.
* This function is not available in software version VSL701034 and higher.
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47
Output Open Phase Detection
This function detects an open output phase by comparing the output current value of each phase with the output open phase detection level (5% of inverter rated current). The detection does not work when the output frequency is below 2% of the base frequency.
Three settings are available:
•
L8-07=0, no output open phase detection
•
•
L8-07=1, the loss of one phase is detected only
L8-07=2, the loss of 2 or 3 phases is detected as well
The detection delay time can be set in parameter L8-20.
Related Parameters
Parameter
No.
L8-07
L8-20
Name
Output open-phase detection selection
Output phase loss detection time
Factory
Setting
Change during
Operation
2
0.2 sec
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
6
Ground Fault Detection
This function detects the earth leakage current by calculating the sum of the three output currents. Normally it should be 0. If the earth leakage current gets too high, the inverter output is switched off and a GF fault is shown on the display. The fault contact is activated.
Related Parameters
Parameter
No.
L8-09 Ground detection selection
Name
Factory
Setting
Change during
Operation
1 No
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
Precautions
•
•
It is not recommended to disable this function.
A Ground Fault can also be detected if the contactors at the inverter output are opened when the output is still active. Therefore, to prevent false Ground Fault detection check the sequence and make sure, that the output is switched of or base blocked before opening the contactors.
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48
Cooling Fan Control
This function controls the fan which is mounted to the inverters heatsink.
Related Parameters
Parameter
No.
L8-10
L8-11
Name
Cooling fan control selection
Cooling fan control delay time
Factory
Setting
Change during
Operation
0
60 s
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
Selecting the Cooling Fan Control
Using parameter L8-10 two modes can be selected:
0: The fan is ON only when the inverter output is ON, i.e. a voltage is output. This is the factory setting. The turn OFF delay time for the fan can be set in parameter L8-11. After a stop command the inverter waits for this time before switching OFF the cooling fan. The factory setting is 60 sec.
1. The fan is ON whenever the inverter power supply is switched ON.
Setting the Ambient Temperature
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A L8-12 Ambient Temperature 45° C No A
At high ambient temperatures an output current derating has to be considered. The derating depends on the
ambient temperature. The derating curve is shown in
. To ensure a safe inverter protection at high ambient temperatures, always set parameter L8-15 to the actual ambient temperature.
10 0
8 0
6 0
4 0
2 0
0
0 10 2 0 3 0 4 0
Temperature (°C)
50 6 0
Fig 6.20 Ambient Temperature Derating Curve
6
6-
49
Input Terminal Functions
The digital multifunction inputs can be set to several functions using the H1-01 to H1-05 parameters (terminal
S3 to S7 function selection). The following section describes the input functions not mentioned in any other section.
Related Parameters
Parameter
No.
H1-01
H1-02
H1-03
H1-04
H1-05
Name
Terminal S3 function selection
Terminal S4 function selection
Terminal S5 function selection
Terminal S6 function selection
Terminal S7 function selection
Factory
Setting
Change during
Operation
80
84
81
83
F
No
No
No
No
No
A
A
A
A
A
V/f
Control Methods
Open
Loop
Vector
A
Close d Loop
Vector
A
Closed
Loop
Vector
(PM)
A
A
A
A
A
A
A
A
A
A
A
A
A
6
Disable the Inverter Output (Baseblock)
Using a baseblock command the inverter output can be cut immediately. There are two baseblock functions available, a hardware baseblock and a software baseblock.
Related Parameters
Parameter
No.
S3-12 Baseblock restart selection
Name
Factory
Setting
Change during
Operation
0 No
V/f
A
Control Methods
Open
Loop
Vector
A
Close d Loop
Vector
A
Closed
Loop
Vector
(PM)
A
Multifunction Inputs (H1-01 to H1-05)
Set
Value
Function
8 External baseblock NO (NO contact: Baseblock at ON)
9 External baseblock NC (NC contact: Baseblock at OFF)
V/f
Yes
Yes
Control Methods
Open Loop
Vector
Closed
Loop
Vector
Yes
Yes
Yes
Yes
Closed
Loop
Vector (PM)
Yes
Yes
Hardware Baseblock
When hardware baseblock is activated, the power supply of the IGBT driver circuit is cut off and the motor starts to coast. To use this baseblock function the digital input S8 must be used. The input is a NC input, i.e. if terminal S8 is open, the inverter is base block condition.
Software Baseblock
When software baseblock is used, the inverter output is cut by a software function. To use this baseblock function one of the digital inputs must be set to baseblock, i.e. one of the parameters H1-01 to H1-05 (digital input terminal S3 to S7 function selection) must be set to 8 or 9 (Baseblock command NO/NC). The input can be used with a NC as well as with a NO contact.
Baseblock Restart Behavior
If baseblock is activated, the inverter output is immediately stopped. Using parameter S1-12 it can be selected, whether the Up/Down command input has to be cycled to restart when the baseblock is disabled or not.
6-
50
•
If S1-12 = 0 the Up/Down command has to be cycled.
Up/Down
Baseblock
OFF ON
ON
OFF
S1-16 +
S1-04
S1-16 +
S1-04
Output frequency
During Run 1 Output
During Run 2 Output
OFF ON
OFF
ON
•
If S1-12=1 the Up/Down command must not be cycled. The inverter automatically restarts when baseblock is deactivated and the Up/Down command is still active.
Up/Down
Baseblock
OFF ON
ON
OFF
S1-16 +
S1-04
S1-16 +
S1-04
Output frequency
During Run 1 Output
During Run 2 Output
OFF ON
OFF
ON
Stopping the Inverter on External Device Errors (External Fault Function)
Set
Value
24
25
26
20
21
22
23
The external fault function activates the fault contact output and stops the Inverter operation. Using this function the inverter operation can be stopped by the break down of peripheral devices or other external errors. The digital operator will display EFx (External fault [input terminal Sx]). The x in EFx shows the number of the terminal at which the external fault signal is input. For example, if an external fault signal is input to terminal
S3, EF3 will be displayed.
To use the external fault function, set one of the values 20 to 2F in one of the parameters H1-01 to H1-05 (digital input terminal S3 to S7 function selection).
Select the set value for H1-01 to H1-05 by a combination of any of the following three conditions.
•
Signal input level from peripheral devices
•
•
External fault detection method
Operation after external fault detection
The following table shows the relationship between the external fault conditions and the set value in H1-.
Input Level
(See Note 1.)
NO Contact NC Contact
Yes
-
Yes
-
Yes
Yes
-
Yes
-
Yes
-
Yes
-
Error Detection Method
(See Note 2.)
Constant
Detection
Detection
During Operation
Yes -
Yes
-
-
Yes
Yes
-
-
Yes
Yes
-
-
Yes
Operation During Error Detection
Decelerate to Stop
(Error)
Yes
-
-
Yes
Yes
Yes
-
Coast to
Stop (Error)
Yes
Yes
Yes
-
-
-
-
Emergency
Stop (Error)
-
-
-
-
-
-
-
Continue
Operation
(Warning)
-
-
-
-
-
-
-
6
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51
Set
Value
2B
2C
2D
2E
2F
27
28
29
2A
-
-
-
-
Input Level
(See Note 1.)
NO Contact
-
Yes
Yes
Yes
Yes
NC Contact
Yes
-
Yes
-
Yes
-
Yes
-
Yes
Error Detection Method
(See Note 2.)
Constant
Detection
Detection
During Operation
Yes
Yes
Yes
-
-
Yes
Yes
-
-
-
-
Yes
Yes
-
-
Yes
Yes
Decelerate to Stop
(Error)
-
-
-
-
-
-
-
-
-
Operation During Error Detection
Coast to
Stop (Error)
Yes
-
-
-
-
-
-
-
-
Emergency
Stop (Error)
Yes
-
-
-
-
-
Yes
Yes
Yes
* 1. Sets the input level at which errors are detected. (NO contact: External error when ON; NC contact: External error when OFF).
* 2. Set the detection method to detect errors using either constant detection or detection during operation.
Constant detection: Detects while power is supplied to the Inverter.
Detection during operation: Detects only during Inverter operation.
Continue
Operation
(Warning)
-
Yes
Yes
Yes
Yes
-
-
-
-
6
Using the Timer Function
The multi-function digital input terminals S3 to S7 can be used as a timer function input and the multi-function output terminals M1-M2, M3-M4, and M5-M6 can be used as a timer function output.
Related Parameters
Parameter
No.
b4-01 b4-02
Name
Timer function ON-delay time
Timer function OFF-delay time
Factory
Setting
Change during
Operation
0.0 s
0.0 s
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
Function
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes 18 Timer function input
Multifunction Outputs (H2-01 to H2-03)
Set
Value
12
Function
Timer function output
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes
6-
52
Setting Example
When the timer function input is ON for longer than b4-01, the timer output function is turned ON. When the timer function input is OFF for longer than b4-02, the timer output function is turned OFF. An example of timer function operation is given in the following diagram.
Timer function input
Timer function output
Fig 6.21 Timer Function Operation Example
Motor Contactor Answer Back Detection
The motor contactors can be observed using the motor contactor answer back function. Therefore an auxiliary contact of the motor contactors must be connected to a digital input which is set to for this function
(H1-=86). If the contactor close command is set and no answer back signal comes from the contactor, the inverter detects a SE1 fault (see below). Parameter S1-28 selects if the detection is enabled or disabled and whether the SE1 fault is reset automatically or if has to be reset manually.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
S1-28
Selects how a SE1 fault is reset.
0: Manual Reset
1: Automatic reset at stop
2: No SE1 detection
0 No A A A A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
86
Function
Motor contactor answer back
V/f
Yes
Control Methods
Open
Loop
Vector
Yes
Closed
Loop ´
Vector
Yes
Closed
Loop
Vector
(PM)
Yes
6
6-
53
SE1 fault (SE1:Contactor Feed-back Faults)
There are 3 possible fault conditions.
Case 1: The motor contactor was closed (Contactor feedback input was on) before the contactor close
command was output.
Case 2: The motor contactor cannot be closed within the contactor close delay time.
Case 3: The motor contactor is opened during inverter run.
Case 4: The contactor confirmation input was enabled before the contactor close output was set.
DC Injection/
Zero Servo
Speed
Run Delay
Up/DownSpeed
Inverter enable (D/I)
Speed Selection
Contactor Control (D/O)
Contactor confirmation (D/I)
Case 1
Case 2
Case 3
Case 4
6
Changing the PG direction
A digital input can be used to change over the PG feedback signal direction. Therefore one of the parameters
H1- must be set to 89.
The PG direction is clockwise (CW) when the input is open and counterclockwise (CCW) when the input is closed. The parameter F1-05 has no effect if this function is activated.
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
89
Function
PG direction change over
V/f
No
Control Methods
Open
Loop
Vector
No
Closed
Loop ´
Vector
Yes
Closed
Loop
Vector
(PM)
Yes
6-
54
Motor 2 Selection
If a digital input is set to “Motor 2 selection” (H1- = 16), this input can be used to switch over between motor 1 and motor 2 settings (E1/E2- and E3/E4-). A digital output can be used to monitor the selection (H2- = 1C).
If motor 2 is selected, the speed set in d1-19 will be the speed reference. d1-19 has priority over all speed inputs except the service speed input.
The output signal sequence (brake control, contactor etc.) is the same as for motor 1.
This function is not available for Closed Loop Vector for PM motors.
If motor 2 is selected, the brake sequence is active and rescue operation can be performed.
Related Parameters
Parameter
No.
d1-19
Name
Motor 2 speed reference
Factory
Setting
Change during
Operation
0.00 Hz No
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector for PM
A A -
Set by
Autotuning
No
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
16
Function
Motor 2 selection (OFF: motor 1, ON: motor 2)
V/f
A
Control Methods
Open
Loop
Vector
A
Closed
Loop ´
Vector
A
Closed
Loop
Vector
(PM)
-
6
6-
55
6
Output Terminal Functions
The digital multifunction outputs can be set to several functions using the H2-01 to H2-03 parameters (terminal M1 to M6 function selection). These functions are described in the following section.
Related Parameters
Parameter
No.
H2-01
H2-02
H2-03
Name
Terminal M1-M2 function selection
Terminal M3-M4 function selection
Terminal M5-M6 function selection
Factory
Setting
Change during
Operation
0
1
2
No
No
No
V/f
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
During Run (Setting: 0) and During Run 2 (Setting: 37)
During Run (Setting: 0)
OFF
ON
The Run command is OFF and there is not output voltage.
The Run command is ON or a voltage is being output.
During Run 2 (Setting: 37)
OFF
ON
The inverter is not outputting a frequency. (Baseblock, DC injection braking or stopped)
The inverter is outputting a frequency.
These outputs can be used to indicate the inverter’s operating status.
Run
Baseblock
OFF ON
ON
OFF
DC Inj DC Inj
Output frequency
During Run 1 Output
During Run 2 Output
OFF
ON
OFF
ON
Fig 6.22 Timing Chart for “During RUN” Output
Zero Speed (Setting: 1)
Output
Frequency
Zero Speed Level*
OFF
ON
Zero Speed
Output
OFF
ON
Fig 6.23 Timing Chart for Zero-speed
The output frequency is higher than the zero speed level*.
The output frequency is lower than the zero speed level*.
* The Zero Speed Level depends on the control mode. It is 0.1 Hz for Closed Loop Vector, 0.5 Hz for Open Loop Vector and 1.2 Hz for V/f control.
6-
56
Inverter Operation Ready (Setting: 6)
If a multifunction output is set to this function, the output is switched ON when the initialisation of the inverter at startup has been finished without any faults.
During DC Bus Undervoltage (Setting: 7)
If a multifunction output is set to this function, the output is switched ON as long as a DC bus under voltage is detected.
During Baseblock (Setting: 8)
If a multifunction output is set to this function, the output is switched ON as long as the inverter output is base blocked.
Frequency Reference Source Selection (Setting: 9)
If a multifunction output is set to this function, the output is ON when the digital operator is selected as frequency reference source. If any other frequency reference is selected the output is switched OFF.
Run Command Selection Status (Setting: A)
If a multifunction output is set to this function, the output is switched ON when the digital operator is selected as RUN command source. If any other RUN command source is selected the output is switched OFF.
Fault Output (Setting: E)
If a multifunction output is set to this function, the output is switched ON when any fault different from
CPF00 and CPF01 occurs. The output is also not switched at minor faults. (Refer to
pp. for a fault list.)
Minor Fault Output (Setting: 10)
If a multifunction output is set to this function, the output is switched ON when a minor fault occurs (refer to
Fault Reset Command Active (Setting: 11)
If a multifunction output is set to this function, the output is switched ON as long as a fault reset command is input at one of the digital inputs.
Timer Function Output (Setting: 12)
page 6-52, Using the Timer Function
During Reverse Run (Setting: 1A)
If a multifunction output is set to this function, the output is switched ON whenever a RUN command in reverse direction is active (also during DC injection and base block) It is OFF when a forward RUN is input.
During Base Block 2 (Setting: 1B)
If a multifunction output set to this function is switched OFF as long as a Baseblock command is input.
Motor 2 selected (Setting: 1C)
If a multifunction output is set to this function, the output is switched OFF when motor 1 is selected and switched ON if motor 2 is selected.
6
6-
57
6
During Regenerative Operation (Setting: 1D)
If a multifunction output is set to this function, the output is switched ON when the motor works regenerative, i.e. when energy is fed back to the inverter.
Restart Enabled (Setting: 1E)
Refer to
page 6-81, Automatic Fault Reset
During Torque Limit (Setting: 30)
Refer to
page 6-43, Limiting the Motor Torque (Torque Limit Function)
.
Zero Servo End (Setting: 33)
Refer to
page 6-16, Zero Speed Control / Zero Servo (position lock)
.
Brake Release Command (Setting: 40)
This output signal can be used to control the brake. The output is closed when the brake shall be opened. Refer also to
Motor Contactor Control Command (Setting: 41)
This output can be used to control the motor contactors. The output is closed when the contactors shall be closed. Refer also to
Cooling Fan Running (Setting: 38)
This output can be used to indicate the inverters heatsink cooling fan operation. The output is on if the cooling fan(s) is (are) on.
Speed Detection at deceleration (Door Zone) (Setting:42)
This output can be used to detect if the car is in the door zone. The detection is speed dependent.
OFF
ON
V/f control and Open Loop Vector control
The output frequency is lower than S1-27 during deceleration
The output frequency is higher than S1-27 during deceleration
Closed Loop Vector control
The motor speed is lower than S1-27 during deceleration
The motor speed is higher than S1-27 during deceleration
If the Up/Down command is released, this output is switched OFF.
Not Zero Speed (Setting:43)
This function can be used for indicating the inverse condition of the Zero speed status.
OFF
ON
The output frequency is lower than the zero speed level.
The output frequency is higher than the zero speed level.
Light Load Search End (Setting: 44/45)
Refer to
page 6-80, Light Load Direction Detection
Base Block Monitor 1 and 2 (Setting: 46/47)
If a multifunction output is programmed for this function, the output is switched if both base block inputs (BB and BB1) are enabled.
6-
58
Motor and V/f Pattern Setup
The L7 inverter supports 2 motor settings (main motor and door motor, E2/E4- parameters) for V/f control, Open Loop Vector and Closed Loop Vector for IM. The active motor setup can be selected by a digital input.
Closed Loop Vector Control for PM supports 1 motor setting (main motor, E5- parameters) only.
Setting Motor Parameters for Induction Motors (Motor 1 and 2)
In order to achieve the maximum performance the V/f pattern and the motor data must be set correctly.
The number of motor parameters which can be set, depend on the selected control mode.
In the vector control methods the motor parameters can be set automatically by using the autotuning function
Up/Down command
Base Block Input
(Term BB & BB1)
BB Monitor 1
BB Monitor 2
).
However, if autotuning does not complete normally, the parameters must be set manually like described below.
Related Parameters
Parameter
No.
Name d1-19
E1-01
E1-13
E2-01/
E4-01
E2-02
E4-02
E2-03/
E4-03
E1-07/
E3-05
E1-08/
E3-06
E1-09/
E3-07
E1-10/
E3-08
E3-01
E1-04/
E3-02
E1-05/
E3-03
E1-06/
E3-04
Motor 2 speed reference
Input voltage setting
Motor 2 control mode selection
Max. output frequency (FMAX)
Max. voltage (VMAX)
Base frequency (FA)
Mid. output frequency (FB)
Mid. output frequency voltage (VB)
Min. output frequency (FMIN)
Min. output frequency voltage (VMIN)
Base voltage (VBASE)
Motor rated current
Motor rated slip
Motor no-load current
0.00 Hz
400 V
*1
0
50.0 Hz
380.0 V
*1
50.0 Hz
3.0 Hz
*1
37.3 V
*1,*2
0.5 Hz
*2
19.4 V
*1,*2
0.0 V
7.00 A
*3
2.70 Hz
*3
2.30 A
*3
Factory
Setting
Change during
Operation
V/f
No
No
No
No
No
No
No
No
No
No
No
No
No
A
Q/
A
Q/
A
Q/
A
A
Q/
A
A
A
Q/
A
Q/
A
Q/
A
A
Q
A
Q/
A
Q/
A
Q/
A
A
Q/
A
A
A
Q/
A
Q/
A
Q/
A
Control Methods
Open
Loop
Vector
A
Closed
Loop
Vector
A
Closed
Loop
Vector for PM
-
Set by
Autotuning
No
Q Q Q No
A
Q/
A
Q/
A
Q/
A
A
Q/
A
Q/
A
Q/
A
No
Yes
Yes
Yes
Yes
-
A
-
-
Q/
A
A
-
A
-
Q
-
-
Yes
Yes
Yes
Yes
Yes
Yes
No A A A Yes
6
6-
59
6
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
E2-08
E2-09
E2-10
E2-11/
E4-07
E2-12
F1-01
E2-04/
E4-04
E2-05/
E2-05
E2-06/
E4-06
E2-07
Number of motor poles (Number of poles)
Motor line-to-line resistance
Motor leak inductance
Motor iron saturation coefficient 1
Motor iron saturation coefficient 2
Motor mechanical losses
Motor iron loss for torque compensation
Motor rated output power
Motor iron saturation coefficient 3
PG constant
4 poles
3.333 Ω
19.3%
0.50
0.75
0.0%
*3
130 W
*3
3.70 kW
1.30
1024
*3
No
No
No
No
No
No
No
No
No
No
-
A
-
-
A
Q/
A
-
-
-
-
A
A
*1. The value is valid for a 400V, 3.7kW inverter
*2. The value depends on the control mode. The given value is valid if V/f control is selected.
*3. All factory-set parameters are for a Yaskawa standard 4-pole motor.
The factory settings depend on Inverter capacity (the values shown are for a 400 V Class Inverter for 3.7 kW).
*4. Rotating tuning only
A
-
Q/
A
A
-
A
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector for PM
Q/
A
Q/
A
-
Set by
Autotuning
Yes
A
A
A
-
Q/
A
A
A
A
Q
-
-
-
-
-
-
-
-
Q
Yes
Yes
Yes
*4
Yes
No
No
Yes
Yes
Yes
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
16
Function
Motor 2 selection (OFF: Motor 1, ON: Motor 2)
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop ´
Vector
A A
Closed
Loop
Vector
(PM)
-
Multi-function Digital Outputs (H2-01 to H2-03)
Set
Value
Function
V/f
Control Methods
Open
Loop
Vector
Closed
Loop ´
Vector
A A 1C Motor selection (OFF: Motor 1, ON: Motor 2) A
Setting Inverter Input Voltage (E1-01)
Set the Inverter input voltage correctly in E1-01 so that it matches the power supply voltage.
Closed
Loop
Vector
(PM)
-
6-
60
Setting the V/f Pattern
If E1-03 is set to F, the V/f pattern can be set individually
using the parameters E1-04 to E1-10 (see
Output voltage (V)
Frequency (Hz)
Fig 6.24 V/f pattern setting
INFO
To set the V/f characteristics linear, set E1-07 and E1-09 to the same value. In this case, E1-08 will be ignored.
Setting Precautions
When a user-defined V/f pattern is used, consider the following points:
•
•
By changing the control method, the parameters E1-07 to E1-10 are changed to the factory settings for the selected control method.
Be sure to set the four frequencies as follows:
E1-04 (FMAX) ≥ E1-06 (FA) > E1-07 (FB) ≥ E1-09 (FMIN)
Manual Setting of the Motor Parameters
Motor Rated Current Setting (E2-01, E4-01)
Set E2-01 to the rated current value as written on the motor nameplate.
Motor Rated Slip Setting (E2-02, E4-02)
Set E2-02 to the motor rated slip calculated from the number of rated rotations on the motor nameplate.
Motor rated slip = Motor rated frequency (Hz) –
Motor No-Load Current Setting (E2-03, E4-03)
Set E2-03 to the motor no-load current at the rated voltage and rated frequency. Normally, the motor no-load current is not written on the motor nameplate. The following formula can be taken as an indication:
I
0
= sin
( acos cos ϕ )
Number of Motor Poles Setting (E2-04, E4-04)
E2-04 is displayed only when Closed Loop Vector control method is selected. Set the number of motor poles as written on the motor nameplate.
6
6-
61
Motor Line-to-Line Resistance Setting (E2-05, E4-05)
E2-05 is set automatically during motor line-to-line resistance autotuning. When it can not be performed for any reason, consult the motor manufacturer for the line-to-line resistance value. The set value should be calculate the motor test report line-to-line resistance value and the following formula:
•
•
•
E-type insulation: [Line-to line resistance (
Ω) at 75°C of test report] × 0.92 (Ω)
B-type insulation: [Line-to line resistance (
Ω) at 75°C of test report] × 0.92 (Ω)
F-type insulation: [Line-to line resistance (
Ω) at 115°C of test report] × 0.87 (Ω)
Motor Leak Inductance Setting (E2-06, E4-06)
Set the amount of voltage drop due to motor leakage inductance in E2-06 as a percentage of the motor rated voltage. If the inductance is not written on the motor nameplate, consult the motor manufacturer.
Motor Iron Saturation Coefficients 1 and 2 Settings (E2-07/08)
E2-07 and E2-08 are set automatically during rotating autotuning.
Motor Iron Loss for Torque Compensation Setting (E2-10)
E2-10 is displayed only in V/f control method and can be set to increase the torque compensation accuracy.
Motor Setting 1/2 Switch Over
Refer to
.
6
Setting Motor Parameters for PM Motors
The autotuning with rotating motor can be used to let the inverter measure the voltage constant, the line-to-line resistance and the q- and d-axis inductances and the encoder offset (refer to
page 4-7, Autotuning Procedure with PM Motors
. It can be performed only if the motor can rotate freely (removed ropes and open brake). If the autotuning can not be performed for any reason, the following motor parameters must be set manually.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
E5-03
E5-04
E5-05
E5-06
E2-07
E5-09
E1-01
E1-04
E1-06
E1-09
E1-13
E5-02
Input voltage setting
Max. output frequency (FMAX)
Base frequency (FA)
Min. output frequency (FMIN)
Base voltage (VBASE)
Motor rated power
Motor rated current
Number of motor poles
Motor line-to-line resistance
Motor d-axis inductance
Motor q-axis inductance
Motor voltage constant
400 V
*1
150 rpm
150 rpm
0 rpm
3.7kW
*2
4 poles
1.326 Ω
26.08 mH
478.6 mV
No
No
No
No
No
No
No
No
No
No
No
No
Q
Q
Q
Q
A
-
-
-
-
-
-
-
*1. The given value is valid for 400V inverters.
*2. The factory settings depend on Inverter capacity (the values shown are for a 400 V Class Inverter for 3.7 kW).
-
-
-
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
Closed
Loop
Vector
(PM)
Q
Q
Q
Q
A
Q
Q
A
-
Q
Q
A
Q
A
Set by
Autotuning
No
Yes
Yes
Yes
Yes
Yes
-
-
-
-
-
-
A
A
A
A
A
A
Yes
Yes
Yes
Yes
Yes
Yes
6-
62
Motor Rated Power (E5-02)
Set E5-02 to the rated power value as written on the motor nameplate or in the motor data sheet.
Motor Rated Current (E5-03)
Set E5-03 to the motor rated current as written on the motor nameplate or in the motor data sheet.
Number of Motor Poles Setting (E5-04)
Set the number of motor poles as written on the motor nameplate or in the motor data sheet.
Motor Line-to-Line Resistance Setting (E5-05)
Set the motor line-to-line resistance as written in the motor data sheet. Alternatively a measured value can be entered.
Motor d- and q-Axis Inductance (E5-06, E5-07)
Set the q-axis and d-axis inductance value in mH as written on the nameplate or the motor data sheet.
Motor Voltage Constant (E5-09)
Set the motor voltage constant k e
is set in mV as written on the nameplate or the motor data sheet.
Motor Rotation Direction Change
If the motor operates in the wrong direction with an Up or Down command, the direction can be changed by parameter S3-08.
Related Parameters
Parameter
No.
F1-05
S3-08
Name
Encoder direction change
Output phase order
Factory
Setting
Change during
Operation
0
No
No
V/f
No
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
No
A
Q
A
Closed
Loop
Vector
(PM)
Q
A
Change Motor Direction in V/f or Open Loop Vector Control
To change the motor rotation direction without changing the wiring, parameter S3-08 can be changed.
•
If S3-08 = 0 the output phase order will be U-V-W
•
If S3-08 = 1 the output phase order will be U-W-V
Change Motor Direction in Closed Loop Vector Control
If Closed Loop Vector Control for IM or PM is used, besides changing parameter S3-08 the encoder direction has to be changed by setting F1-05.
6
IMPORTANT
If Closed Loop Vector Control for PM motors is used, always perform an encoder offset tuning after parameter S3-08 of F1-05 has been changed.
6-
63
Digital Operator/LED Monitor Functions
6
Setting Digital Operator/LED Monitor Functions
Related Parameters
Parameter
No.
o1-01 o1-02
Name
Monitor selection
Monitor selection after power up o1-03 Frequency units of reference setting and monitor o1-04 Setting unit for frequency reference related parameters i o1-05 o2-02 o2-03 o2-04 o2-05 o2-06 o2-07 o2-08 o2-09 o2-10 o2-12 o2-15
S3-13
S3-14
S3-15
LCD Display contrast
STOP key during control circuit terminal operation
User parameter initial value
Inverter kVA selection
Frequency reference setting method selection
Operation selection when digital operator/LED Monitor is disconnected
Cumulative operation time setting
Cumulative operation time selection
Initialize Mode
Fan operation time setting
Fault trace initialize
“Number of Travels” monitor initialize
Traction sheave diameter
Roping ratio
Gear ratio
*1. Depends on the inverter capacity
Monitor Selection (o1-01)
Using parameter o1-01 the third monitor item that is displayed in drive mode can be selected. This function has no effect on the LCD-operator (JVOP-160-OY).
Monitor Display when the Power Supply is Turned ON (o1-02)
The parameter o1-02 selects the monitor item (U1-), which is to be displayed in the first line on the Digital Operator when the power supply is turned ON.
Changing Frequency Reference and Display Units (o1-03)
Parameter o1-03 sets the display units of some frequency/speed related parameters on the Digital Operator.
The setting in o1-03 affects the display units of the following monitor items:
•
•
•
U1-01 (Frequency Reference)
U1-02 (Output Frequency)
U1-05 (Motor Speed)
6-
64
•
•
U1-20 (Output Frequency after Soft Start) d1-01 to d1-17 (Frequency references)
Display in Hz
Set o1-03 to “0” to change the display unit of the above mentioned parameters to Hz.
Display in%
Set o1-03 to “1” to change the display unit for the above mentioned parameters to % related to the maximal frequency/speed set in parameter E1-04.
Display in rpm
Set o1-03 to the number of poles of the used motor to display the mentioned parameters in rpm.
Display in m/s
Set o1-03 to 3 to enable the display in m/s. The inverter uses the parameters S3-13 (traction sheave diameter),
S3-14 (roping ratio) and S3-15 (gear ratio) to calculate the m/s display. To achieve an accurate display value these parameters must be set accurately.
Changing the Units for Frequency Parameters Related to V/f settings (o1-04)
Using parameter o1-04 the unit of the frequency parameters for the V/f setting can be set. If o1-04 is set to 0 the unit is “Hz”. If o1-04 is set to 1 it is “rpm”. The parameter is available in Closed Loop Vector control only.
Changing the Display Contrast (o1-05)
Using o1-05 the contrast of the LCD display on the digital operator can be raised or lowered. Lowering the o1-05 value decreases the contrast and vice versa.
Enable/Disable the LOCAL/REMOTE Key (o2-01)
Set o2-01 to 1 to enable the LOCAL/REMOTE Key on the Digital Operator.
If the key is enabled, the frequency reference source and the RUN command source can be switched over between LOCAL (Operator) and REMOTE (b1-01/02 setting).
Disabling the STOP Key (o2-02)
This parameter is used to set if the STOP key on the operator is active during remote control (b1-02
≠ 0) or not.
If o2-02 is set to 1, a STOP command from the operators STOP key is accepted. If o2-02 is set to 0 it is disregarded.
Saving User Parameters (o2-03)
The Inverter parameter setting values can be saved as user-set parameter initial values by setting parameter o2-
03 to 1.
To initialize the inverter using the user-set initial values, set parameter A1-03 to 1110. To clear the user-set initial values set o2-03 to 2.
Changing the Inverter Capacity Setting (o2-04)
The inverter capacity setting can be set using parameter o2-04. Refer to
page 5-63, Factory Settings Changing with Inverter Capacity (o2-04)
to see parameters that depend on this setting.
Normally it is not necessary to change this setting, unless the control card has been changed.
6
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65
6
Setting the Frequency Reference using the UP and DOWN Keys without Using the
Enter Key (o2-05)
This function is active when frequency references are input from the Digital Operator. When o2-05 is set to 1, the selected frequency reference can be incremented and decremented the UP and DOWN keys without using the Enter key. The function work only if parameter b1-01 is set to 0.
Operation Selection when the Digital Operator/LED Monitor is Disconnected (o2-06)
This function selects the operation when the digital operator/LED Monitor gets disconnected when a RUN command is active.
If o2-06 is set to 0 the operation is continued.
If o2-06 is set to 1 the output is switched off and the motor coasts to stop. The fault contact is operated. When the operator is reconnected an OPR (Operator disconnected) is shown.
Cumulative Operation Time (o2-07 and o2-08)
The inverter has a function that counts the operation time of the inverter cumulatively.
Using parameter o2-07 the accumulated operation time can be changed, e.g. after a replacement of the control board. If parameter o2-08 is set to 0, the inverter accumulates the time, whenever the power supply is switched
ON. If o2-08 is set to 1, the time when a RUN command is active is counted only. The factory setting is 0.
Cooling Fan Operation Time (o2-10)
This function counts the operating time of the inverter mounted fan cumulatively.
Using parameter o2-10 the counter can be reset, e.g. when the fan has been replaced.
Fault Trace Initialize (o2-12)
This function can be used to initialize the fault trace by setting parameter o2-12 to 1.
“Number of Travels” counter Initialize (o2-15)
Using this parameter the lift operation counter monitor (U1-55) can be initialized.
Copying Parameters (JVOP-160-OY only)
The following three digital operator functions can be used in order to copy/verify parameter settings:
•
Store Inverter parameter set values in the Digital Operator by setting o3-01 to 1 (READ)
•
•
Write parameter set values stored in the Digital Operator to the Inverter by setting o3-01 to 2 (COPY)
Compare parameter set values stored in the Digital Operator with Inverter parameters settings by setting o3-01 to 3 (VERIFY)
The data saved in the operator can be protected from overwriting by setting parameter o3-02 to 0. In this case a READ command can not be executed. If it is nevertheless still done, “PrE” will be displayed at the operator.
Related Parameters
Parameter
No.
o3-01 o3-02
Copy function selection
Read permitted selection
Name
Factory
Setting
Change during
Operation
0
0
No
No
V/f
A
A
Control Methods
Open
Loop
Vector
A
A
Closed
Loop
Vector
A
A
Closed
Loop
Vector
(PM)
A
A
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66
Storing Inverter set values in the Digital Operator (READ)
To store Inverter set values in the Digital Operator use the following method.
Step
No.
Explanation
1 Press the Menu Key and select advanced programming mode.
Digital Operator Display
-ADV-
** Main Menu **
Programming
2 Press the DATA/ENTER Key.
3
Press the Increment and Decrement Key until parameter o3-01 is displayed (Copy Function
Selection).
4 Press the DATA/ENTER Key and select the constants setting display.
5 Change the set value to 1 using the Increment Key.
6 Set the changed data using the DATA/ENTER Key. The READ function starts.
-ADV-
Initialization
A1 - 00=1
Select Language
-ADV-
COPY Function o3 - 01=0
Copy Funtion Sel
-ADV-
Copy Function Sel o3-01=
0
COPY SELECT
*0*
-ADV-
Copy Function Sel o3-01=
1
*0*
INV OP READ
-ADV-
READ
INV OP READING
7 If the READ function ends normally, “End” is displayed on the Digital Operator.
-ADV-
READ
READ COMPLETE
8 The display returns to o3-01 when a key is pressed.
-ADV-
Copy Function Sel o3 01 =0
COPY SELECT
*0*
If an error is displayed, press any key to cancel the error display and return to the o3-01 display. Refer to
page 7-16, Digital Operator Copy Function Faults
for corrective actions.
Writing Parameter Set Values Stored in the Digital Operator to the Inverter (COPY)
To write parameter set values stored in the Digital Operator to the Inverter, use the following method.
Step
No.
Explanation Digital Operator Display
1 Press the MENU Key and select advanced programming mode.
-ADV-
** Main Menu **
Programming
2 Press the DATA/ENTER Key.
-ADV-
Initialization
A1
- 00 = 1
Select Language
6
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67
6
Step
No.
Explanation
3
Press the Increment and Decrement Key until parameter o3-01 is displayed (Copy Function
Selection).
4 Press the DATA/ENTER Key and select the constants setting display.
5 Change the set value to 2 using the Increment Key.
6 Set the changed data using the DATA/ENTER Key. The COPY function starts.
Digital Operator Display
-ADV-
COPY Function o3 - 01 = 0
Copy Funtion Sel
-ADV-
Copy Function Sel o3-01= 0
*0*
COPY SELECT
-ADV-
Copy Function Sel o3-01= 2
*0*
OP INV WRITE
-ADV-
COPY
OP INV COPYING
7 If the COPY function ends normally, “End” is displayed on the Digital Operator.
-ADV-
COPY
COPY COMPLETE
8 The display returns to o3-01 when a key is pressed.
-ADV-
Copy Function Sel o3 01 =0
COPY SELECT
*0*
If an error is displayed, set the parameters again. Refer to
page 7-16, Digital Operator Copy Function Faults
for corrective actions.
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68
Comparing Inverter Parameters and Digital Operator Parameter Set Values (VERIFY)
To compare Inverter parameters and Digital Operator parameter set values, use the following method.
Step
No.
Explanation Digital Operator Display
1 Press the MENU Key and select advanced programming mode.
-ADV-
** Main Menu **
Programming
2 Press the DATA/ENTER Key.
3
Press the Increment and Decrement Key until the parameter o3-01 is displayed (Copy Function Selection).
4 Press the DATA/ENTER Key and select the function setting display.
5 Change the set value to 3 using the Increment Key.
6 Set the changed data using the DATA/ENTER Key. The VERIFY function starts.
-ADV-
Initialization
A1 - 00 = 1
Select Language
-ADV-
COPY Function o3
- 01=0
Copy Funtion Sel
-ADV-
Copy Function Sel o3-01= 0
*0*
COPY SELECT
-ADV-
Copy Funtion Sel o3-01= 3
*0*
OP INV VERIFY
-ADV-
VERIFY
DATA VERIFYING
7 If the VERIFY function ends normally, “End” is displayed on the Digital Operator.
-ADV-
VERIFY
VERIFY COMPLETE
8 The display returns to o3-01 when a key is pressed.
-ADV-
Copy Function Sel o3 01 = 0
COPY SELECT
*0*
If an error is displayed, press any key to cancel the error display and return to the o3-01 display. Refer to
page 7-16, Digital Operator Copy Function Faults
for corrective actions.
Application Precautions
INFO
When using the copy function, check that the following settings are the same between the Inverter data and the
Digital
• Inverter product and type
• Software number
• Inverter capacity and voltage class
• Control method
6
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Prohibiting Overwriting of Parameters
If A1-01 is set to 0, all parameters except A1-01 and A1-04 are write protected, U1-, U2- and U3-
will be displayed. If A1-01 is set to 1, only the parameters A1-01, A1-04 and A2- can be read or written, U1-, U2- and U3- will be displayed. All other parameters will not be displayed.
If one of the parameters H1-01 to H1-05 (digital input terminal S3 to S7 function selection) is set to 1B (write parameters permitted), parameters can be written from the digital operator when the terminal that has been set is ON. When the set terminal is OFF, writing parameters other than the frequency reference is prohibited.
However, the parameters can be read.
Related Parameters
Parameter
No.
A1-01 Parameter access level
Name
Factory
Setting
Change during
Operation
2 Yes
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
6
Setting a Password
When a password is set in A1-05 and if the set values in A1-04 and A1-05 do not match, only the settings of parameters A1-01 to A1-03, or A2-01 to A2-32 can be modified.
The setting of all parameters except A1-00 can be prohibited using the password function in combination with setting parameter A1-01 to 0 (Monitor only).
Related Parameters
Parameter
No.
A1-01
A1-04
A1-05
Parameter access level
Password
Password setting
Name
Factory
Setting
Change during
Operation
2
0
0
No
No
No
V/f
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
Setting a Password
The password can be set in parameter A1-05. Normally A1-05 is not displayed. To display and modify A1-05 the MENU and Reset key must be pressed together in the A1-04 display.
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70
Displaying User-set Parameters Only
The A2 parameters (user-set parameters) and A1-01 (parameter access level) can be used to establish a parameter set that contains only the most important parameters.
Set the number of the parameter to which should appear in the A2- parameters, and then set A1-01 to 1.
The advanced programming mode now allows to read and modify A1-01 to A1-03 and the parameters set in
A2-01 to A2-32 only.
Related Parameters
Parameter
No.
A2-01 to
A2-32
User setting parameters
Name
Factory
Setting
Change during
Operation
V/f
No A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
A A
6
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PG Option Cards
To have a more precise speed control the inverter can be equipped with a PG option card for the connection of a pulse generator. Three different PG cards can be used, the PG-B2, the PG-X2 and the PG-F2 card. Refer to
page 2-24, Option Card Models and Specifications
6
PG Setup
Related Parameters
Parameter
No.
F1-01
F1-05
PG constant
PG rotation
Name
Factory
Setting
Change during
Operation
V/f i i
1
2
60°
No
No
No
No
No
No
No
No
No
No
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q
1024
Closed
Loop
Vector
(PM)
No
-
-
Q
2048
Q
0
No
-
No
No
No
-
A
No
No
Q
1
A
A
A
F1-06
F1-21
F1-22
PG division rate (PG pulse monitor)
Absolute encoder resolution
Magnet position offset
Using PG Speed Control Card
There are three types of PG Speed Control Card that can be used in Closed Loop Vector control:
•
PG-B2: A/B-phase pulse input, compatible with open collector outputs.
•
PG-X2: A/B/Z-phase pulse input, compatible with line drivers (RS-422).
•
PG-F2: Hiperface y
/ EnDat encoder feedback.
For the mounting instructions, specifications and connection diagrams refer to
page 2-24, Installing and Wiring Option Cards
IMPORTANT
If Open Loop Vector control for IM is used and a PG-B2/X2 card is installed, the speed detected by the
PG card is displayed in the monitor parameter U1-05. Therefore the PG constant has to be set in parameter F1-01. The direction of the speed detection can be changed by parameter F1-05.
To change the U1-05 value to the internally calculated speed value remove the PG card.
Setting Number of PG Pulses (F1-01)
Set the number of PG (Pulse Generator/Encoder) pulses in pulses per revolution.
If a PG-F2 card is installed, the encoder type must be set in parameter n8-35 before the PG constant is set. The possible set values for F1-01 depend on the n8-35 setting. The following resolutions can be set:
•
•
for Hiperface y
: 1024 for EnDat: 512, 1024, 2048
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72
Suit the PG Rotation Direction and Motor Rotation Direction (F1-05)
Parameter F1-05 can be used to change the encoder signal direction if it is wrong.
•
•
If F1-05 is set to 0 the inverter expects channel A to lead 90° before channel B (Sin-channel leads 90° before Cos-channel on PG-F2 card) if a forward command is applied (FWD means counterclockwise rotation seen from the shaft side).
If F1-05 is set to 1 the inverter expects channel B to lead 90° before channel B (Cos-channel leads 90° before Sin-channel on PG-F2 card) if a forward command is applied.
IMPORTANT
If Closed Loop Vector Control for PM motors is used, an encoder offset autotuning must be performed if parameter F1-05 is changed.
Setting PG Pulse Monitor Output Division Ratio (F1-06)
This function is enabled only when a PG-B2 speed feedback card is used. Set the division ratio for the PG pulse monitor output. The set value is expressed as n for the higher place digit, and m for the two lower place digits. The dividing ratio is calculated as follows:
Dividing ratio = (1 + n)/m (Setting range) n: 0 or 1, m: 1 to 32
F1-06 =
n
m
The division ratio can be set within the following range: 1/32
≤ F1-06 ≤ 1. For example, if the division ratio is
1/2 (set value 2), half of the number of pulses from the PG are output at the pulse monitor.
Setting Number of Gear Teeth Between PG and Motor (F1-12 and F1-13)
If there are gears between the motor and PG, the gear ratio can be set using F1-12 and F1-13.
When the number of gear teeth has been set, the number of motor rotations within the Inverter is calculated using the following formula.
No. of motor rotations (r/min.) = No. of input pulses from PG
× 60 / F1-01 × F1-13 (No. of gear teeth on PG side) / F1-12 (No. of gear teeth on motor side)
Setting the Absolute Encoder Resolution (F1-21)
If a Hiperface y
encoder is used, the serial line resolution must be selected by parameter F1-21 according to the encoder data sheet. The possible resolution setting depends on the encoder selection (n8-35=5):
•
•
Hiperface y
: 0, 1 or 2 (16384, 32768, 8192)
EnDat: 2 (fixed to 8192)
Setting the Magnet Position Offset (F1-22)
Parameter F1-22 can be used to set the offset between the magnet and the encoder zero position. The value is
automatically set during the PM motor autotuning or encoder offset auto tuning (refer to
).
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73
6
Fault Detection
Related Parameters
Parameter
No.
F1-02
F1-03
F1-04
F1-08
F1-09
F1-10
F1-11
F1-14
F1-18
F1-19
F1-21
F1-22
F1-24
Name
Operation selection at PG open circuit (PGO)
Operation selection at overspeed (OS)
Operation selection at deviation (DEV)
Overspeed detection level
Overspeed detection time
Speed deviation detection level
Speed deviation detection time
PG open-circuit detection delay time
DV3 detection selection
DV4 detection selection
Absolute encoder resolution
Magnet position offset
PGO detection Level at stop
Factory
Setting
Change during
Operation
1
1
3
115%
0.0 sec.
10%
0.5 sec.
2.0 s
1
1024
2
60°
20%
No
No
No
No
No
No
No
No
No
No
No
No
No
V/f
-
-
-
-
-
-
-
-
-
-
-
-
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
-
-
-
-
-
-
-
-
-
-
-
-
-
A
A
A
A
A
A
A
A
-
-
-
-
-
A
A
A
A
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
Detecting PG Open Circuit During Run (F1-02 and F1-14)
Parameter F1-02 selects the stopping method when a PG disconnection is detected.
PG open (PGO) is detected only when the inverter is running at least with a frequency reference higher than
1% of the maximum output frequency or above the minimum frequency (E1-09) and the PG feedback signal is missing for the time set in F1-14 or longer.
Detecting Motor Overspeed (F1-03, F1-08 and F1-09)
An overspeed (OS) is detected when the motor speed continues to exceed the set frequency value in F1-08 for a time longer than set in F1-09. After detecting an overspeed (OS), the Inverter stops according to the setting in F1-03.
Detecting a Speed Deviation between the Motor and Speed Reference (F1-04, F1-10 and F1-11)
A speed deviation fault is detected when the speed deviation (i.e., the difference between the speed reference and the actual motor speed) is too large. Speed deviation (DEV) is detected only after a speed agreement
(speed reference and actual motor speed are within the setting range of L4-02) and if a speed deviation higher than the set value in F1-10 continues for longer than the time set in F1-11. After a speed deviation is detected, the Inverter stops according to the setting in F1-04.
Detecting a Wrong Rotation Direction DV3 (F1-18, Closed Loop Vector for PM only)
A DV3 fault indicates a wrong motor rotation direction. It is detected if
•
the speed deviation is higher than 30% and
•
the internal torque reference value and the acceleration have opposite signs
The fault is detected after the time F1-18 x 5 ms.
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74
Detecting a Wrong Rotation Direction DV4 (F1-19, Closed Loop Vector for PM only)
A DV4 fault indicates a wrong motor rotation direction. It is detected if
•
the reference direction and the motor rotation direction have opposite signs and
•
the deviation is higher than the value of parameter F1-19 (set in encoder pulses).
Machine Data Copy Function
If a Hiperface y
or an EnDat encoder is used, the motor and encoder data can be saved in the encoder memory and can be read out later, e.g. if a motor has been replaced to an equal type or if the inverter is replaced.
Related Parameters
Parameter
No.
F1-25
F1-26
Encoder copy selection
Encoder write protection
Name
Factory
Setting
Change during
Operation
0
0
No
No
V/f
No
No
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
No
No
No
No
Closed
Loop
Vector
(PM)
A
A
Saved Parameters
The following parameters are saved in the encoder memory:
• E1-04
• E1-06
• E1-13
• E5-02
• E5-03
• E5-04
• E5-05
Motor maximal speed
Motor rated speed
Motor rated voltage
Motor rated power
Motor rated current
Motor pole number
Motor line-to-line resistance
• E5-06
• E5-07
• E5-09
• F1-01
• F1-05
• F1-21
• F1-22
Motor d axis inductance Ld
Motor q axis inductance Lq
Motor voltage constant Ke
PG pulse constant
PG rotation direction
Absolute encoder selection
Magnet position offset
Saving Parameters Into the Encoder Memory
To save parameters in the encoder memory, the Encoder write protection must be off (F1-26 = 1) and the parameter F1-25 has to be set to 1 (“ERED, INViENC WRITING” is displayed during the save process).
The display of F1-25 automatically returns to 0 when the operation is finished (“ERED, WRITE COM-
PLETE” is displayed). If any fault occurs the fault code will be displayed (refer to
).
Parameters which had been stored in the encoder before will be overwritten.
Read Parameters From the Encoder Memory
To read parameters form the encoder memory the parameter F1-25 must be set to 2. Before reading the parameters make sure, that the correct control mode and encoder type are selected in the parameters A1-02 and n8-35. If parameter n8-35 has to be changed, cycle the power supply after changing it and set parameter F1-25 to 2 afterwards (“ECPY, ENCiINV COPIYING” is displayed during the read process). The display of F1-25 automatically returns to 0 when the operation is finished (“ECPY, COPY COMPLETE” is displayed). If any fault occurs the fault code will be displayed (refer to
page 7-17, Machine Data Copy Function Faults
).
6
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75
6
Verify Saved Parameters
To compare the parameters stored in the inverter and encoder the parameter F1-23 must be set to 3 (“EVRFY,
DATA VERIFYING” is displayed during the verify process).
If the data are identically, the display will show “EVRFY, VERIFY COMPLETE”.
If the data do not match, “EVRFY, VERIFY ERROR” will be displayed.
IMPORTANT
In order to perform the WRITE/COPY function:
• The motor must not turn and the drive must be in baseblock condition
• for EnDat the OEM1 area1 of the EEPROM must be available (address 64 to 255)
• for Hiperface y the data field DF#0 must be available.
• A CPF03/24 must not be active.
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76
Rescue System
Using rescue operation the car can be moved to the next floor if the power supply fails. In this case the inverter must be supplied by a UPS or a battery and the rescue operation must be enabled by a digital input (H1- =
85). The DC bus voltage during rescue operation has to be set in parameter L2-11. A light load detection function can be used to detect the light load direction for the car evacuation.
Related Parameters.
Parameter
No.
d1-05
L2-11
S3-06
S3-07
S3-10
S3-11
S3-24
Name
Rescue operation speed
DC bus voltage during rescue operation
Light Load Search for rescue operation
Light Load Search time for rescue operation
Light Load Search speed
Rescue operation torque limit
Light load search method
5 Hz
0V
0
1.0 sec.
3.00 Hz
100%
0
Factory setting
Change during operation
No
No
No
No
No
No
No
V/f
A
A
A
A
A
-
A
A
A
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
A
A
-
Closed
Loop
Vector
(PM)
A
A
A
A
A
A
-
Multi-function Digital Inputs (H1-01 to H1-05)
Setting
85
Function mane
Rescue operation command
V/f
A
Open
Loop
Vector
A
Closed
Loop
Vector
A
Closed
Loop Vector (PM)
A
Multi-function Digital Outputs (H2-01 to H2-03)
Setting
44
45
Function mane
Light load direction output (ON: Forward, OFF: Reverse)
Light load detection status (ON: Ready for detection run, OFF:
Detection in progress)
V/f
A
A
Open
Loop
Vector
A
A
Closed
Loop
Vector
A
Closed
Loop Vector (PM)
A
A A
Rescue Operation Power Supply Ratings
The power supply to the DC bus and to the control card during rescue operation must meet the following requirements:
Voltage class
200 V
400 V
DC Bus Power Supply
48 to 300 VDC
96 to 600 VDC
Control Power Supply
280 to 300 VDC
280 to 600 VDC
6
IMPORTANT
When an AC power supply (e.g. a single phase UPS like example 1 or 2 below) is used, make sure that the rectified voltage meets the voltage range above.
6-
77
6
Rescue operation wiring examples
The following diagrams show some wirings examples for rescue operation.
Example 1: 1 Phase, 230 V UPS Power Supply
Wiring
Elevator
Control
System
Inverter
A
N
B2
B1
UPS
1x230
VAC
Contactor Sequence
Contactor B
Contactor A
L1
L2
L3
B
R/L1
S/L2
T/L3
-
U/T1
V/T2
W/T3
Power Supply
Control circuit
Rescue Operation
Enable Input
P0
N0
Sx
SC
The contactors must be operated, so that contactor B is always opened, before A is closed. When the rescue operation is finished, the contactor A must be opened, before B is closed.
If the UPS power is weak or Light load detection is not used, it can happen that the inverter trips with a UV2 fault. In this case increase the UPS power, use the light load detection function or use the configuration in example 2.
L1
L2
L3
Example 2: 1 Phase, 230 V UPS Power Supply, Low power UPS or Light Load detection not
used
Wiring
Contactor Sequence
Inverter
N
UPS
1x230
VAC
A
B2
B1
Contactor A
Contactor B
Contactor C
R/L1
S/L2
T/L3
-
U/T1
V/T2
W/T3
B
Rectifier Diode and Capacity
C
Rescue Operation
Enable Input
P0
N0
Sx
SC
Power Supply
Control circuit
The contactors must be operated, so that contactor B is always opened, before A and C are closed. Contactor C can be closed after A but not before. When the rescue operation is disabled, the contactors A and C must be opened, before B is closed.
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78
Example 3: Two Batteries, Main battery voltage lower than 280 VDC.
Wiring
Inverter
Contactor Sequence
B2
Contactor B
B1
Contactor A
A
Contactor C
+2
Main
Battery
Main power
L1
L2
L3
B
+
1
R/L1
S/L2
T/L3
-
U/T1
V/T2
W/T3
Power Supply
Control circuit
P0
Controller
Supply Battery
C
N0
Rescue Operation
Enable Input
Sx
SC
The contactors must be operated, so that contactor B is always opened, before A and C are closed. Contactor C can be closed after A but not before. When the rescue operation is disabled, the contactors A and C must be opened, before B is closed.
Example 4: Main battery voltage higher than 280 VDC.
Wiring
Inverter
B2
B1
A
Contactor Sequence
Contactor B
Contactor A
Main
Battery
Main power
L1
B
L2
L3
R/L1
S/L2
T/L3
-
U/T1
V/T2
W/T3
Power Supply
Control circuit
P0
N0
Sx
SC
Rescue Operation
Enable Input
The contactors must be operated, so that contactor B is always opened, before A is closed. When the rescue operation is disabled, the contactor A must be opened, before B is closed.
Rescue Operation Speed
During rescue operation the speed is limited by the battery voltage using the following formula:
•
for the 200 V class:
Rescue Operation Speed Limit =
×
300 V 2
•
for the 400 V class:
Rescue Operation Speed Limit =
×
×
If the rescue speed reference (d1-15) is higher than the rescue operation speed limit, the output frequency is automatically limited to the calculated limit. It prevents a voltage saturation and a possible motor stalling.
Precautions
Because of the possibly low DC bus voltage during rescue operation, the heatsink cooling fans may not work.
A continuous operation under this condition can result in over heat faults and inverter damage.
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Torque Limits during Rescue Operation
Depending on the rescue system it might be useful to apply a torque limit. The torque limit for rescue operation can be set in parameter S3-11. It is active only if the rescue operation digital input is set an has no effect to the normal operation.
Light Load Direction Detection
If the light load detection function is enabled (S3-06 is set to 1), the inverter can detect the light load direction for rescue operation. Therefore the elevator is driven with the light load detection speed (S3-10) sequentially in forward and reverse direction for the time set in parameter S3-07. The current/torque is measured in each direction and the values are compared to each other.
•
If the detected light direction is forward, the inverter stops and restarts in the forward direction with the set rescue operation speed. At the restart the light load detection status output (H2-=45) and the light load direction output (H2-=44) are set.
DI Rescue operation
External
Controller Fwd or Rev Run
Torque is measured after speed agree for the time S3-07
FWD
Internal Fwd Run
Internal Rev Run
REV
Car evacuation in forward direction
D/O Light Load Status
D/O Light Load Direction
OFF = Light load detection in progress
ON = Forward direction selected
Fig 6.25 Light Load Direction Sequence - FWD is Light Direction
•
If the detected light load direction is reverse, the inverter continues the operation with the set rescue operation speed. The light load detection status output (H1-=45) is set, the direction output is not changed.
DI Rescue operation
External
Controller Fwd or Rev Run
Torque is measured after speed agree for the time S3-07
FWD
Internal Fwd Run
Internal Rev Run
REV
Car evacuation in reverse direction
D/O Light Load Status
D/O Light Load Direction
OFF = Light load detection in progress
OFF = Reverse direction selected
Fig 6.26 Light Load Direction Sequence - REV is Light Direction
Light Load Direction Detection Method
If parameter S3-24 is set to “0”, the motor current values in Up and Down direction are compared. The direction with the lower current will be taken as light load direction.
If parameter S3-24 is set to “1”, in Open Loop Vector the motor speed values and V/f control the excitation currents value in both directions are compared.
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Automatic Fault Reset
The inverter can reset faults automatically. The maximum number of resets can be selected as well as the operation mode of the fault relay.
Auto-resetable Fault codes are: UV1, GF, OC, OV, OL2, OL3, OL4, UL3, UL4, PF, LF, SE1, SE2, SE3
Related Constants.
Parameter
No.
L5-01
L5-02
L5-05
Name
Number of restarts
Restart operation selection
UV1 auto reset selection
Factory setting
Change during operation
2
1
0
No
No
No
V/f
A
A
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
A
Closed
Loop
Vector
(PM)
A
A
A
Multi-function Digital Outputs (H2-01 to H2-03)
Setting
1E Fault restart active
Function name
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop Vector (PM)
A
Working Principle
Whenever a fault occurs, the inverter output is cut and the brake is closed. A fault is output. When the automatic fault reset is enabled, the fault is reset 2 seconds after the Up/Down signal has been removed. The inverter can be restarted. This can be repeated for the number of times set in L5-02. The restart counter is reset when the power supply is switched off.
Fault
DC Injection/
Zero servo
Speed
Up/Down
Brake Open Command
Fault Output
Auto-Reset
The fault is reset 2 sec. After the Up/Down signal has been removed
Fig 6.27 Automatic Fault Reset Sequence
Fault Relay Operation
Parameter L5-02 can be used to enable or disable the fault relay (terminal MA-MB-MC) during the fault retry.
Even if the fault relay is deactivated during the retries (L5-02=0), it is operated after the number of retries set in L5-01 has been reached.
•
•
L5-02 = 1 enabled the fault relay.
L5-02 = 0 disables the fault relay.
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Fault Restart Indication
When the fault retry function is used, the inverter tries to reset the fault every 5 ms. If a digital output is programmed for the “Restart enable” function (H2-=1E), the output is set as long as the inverter tries to reset the fault. After a successful fault reset the output is cleared.
UV1 Fault Restart Selection
Using parameter L5-05 the auto reset method for a UV1 (DC bus under voltage) fault can be selected.
•
•
If L5-05 = 0 the UV1 fault is treated like set in parameter L5-01, i.e. the inverter tries to reset UV1 for the number of times set in L5-01 like described above.
If L5-05 = 1 the UV1 fault is always automatically reset, regardless to the L5-01 setting.
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Memobus Communications
MEMOBUS Communications Configuration
The serial communication can be performed between one PC and one inverter in order to read / write parameters or monitor the drive. The inverter can not be controlled by Memobus communications.
To use the communications port the operator panel must be removed from the inverter. The operator panel connector on the inverter side has to be connected to the serial RS-232 port of the PC/PLC.
Communications Specifications
The MEMOBUS communications specifications are shown in the following table.
Item Specifications
Interface RS-232 (not isolated)
Baud rate: 9,600 bps
Communications Parameters
Communications Protocol
Number of Connectable Units
Data length:
Parity:
Stop bits:
MEMOBUS
1
8 bits fixed none
1 bit fixed
Memobus Operations
MEMOBUS communications can perform the following operations:
•
Monitoring operation status of the inverter
•
Setting and reading parameters (for the parameter register numbers refer to the L7Z manual)
Message Content
Message Format
In MEMOBUS communications, the master sends commands to the slave, and the slave responds. The message format is configured for both sending and receiving as shown below, and the length of data packets depends on the command (function) content.
Slave address
Function code
Data
Error check
Slave Address
The slave address can not be set in the inverter. The slave address field in the message can contain any address from 0 to 31.
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Function Code
The function code specifies commands. The three function codes shown in the table below are available.
Command Message Response Message
Function Code
(Hexadecimal)
Function
Min. (Bytes) Max. (Bytes) Min. (Bytes) Max. (Bytes)
03H
08H
10H
Read memory register contents
Loop back test
Write multiple memory registers
8
8
11
8
8
41
7
8
8
37
8
8
Data
Configure consecutive data by combining the memory register address (test code for a loop back address) and the data the register contains. The data length changes depending on the command details.
Error Check
Errors during communications are detected using CRC-16 (cyclic redundancy check, checksum method).
The result of the checksum calculation is stored in a data-word (16 bit), which starting value is FFFH. The value of this word is manipulated using Exclusive OR- and SHIFT operations together with the data package that should be sent (slave address, function code, data) and the fixed value A001H. At the end of the calculation the data-word contains the checksum value.
The checksum is calculated in the following way:
1. The starting value of the 16 Bit data-word, that is used for the calculation, has to be set to FFFFH.
2. An Exclusive OR operation has to be performed with the starting value and the slave address.
3. The result has to be shifted to the right until the overflow bit becomes 1.
4. When this bit becomes 1, an Exclusive OR operation with the result of step 3 and the fix value A001H has to be performed.
5. After 8 shift operations (every time when the overflow bit becomes 1, an Exclusive OR like in step 4 has to be done), perform an Exclusive OR operation with the result of the former operations and the next data package (8 bit function code). Again the result of this operation has to be shifted 8 times and if needed it has to be interconnected with the fix value A001H using an Exclusive OR operation.
6. The same steps have to be performed with the data, first with the higher byte and then with the lower byte until all data are proceeded.
7. The result of these operations is the checksum. It consists of a high and a low byte.
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The following example clarifies the calculation method. It shows the calculation of a CRC-16 code with the slave address 02H (0000 0010) and the function code 03H (0000 0011). The resulting CRC-16 code is D1H for the lower and 40H for the higher byte. The example calculation in this example is not done completely
(normally data would follow the function code).
Calculations Overflow Description
1111 1111 1111 1111
0000 0010
1111 1111 1111 1101
0111 1111 1111 1110
1010 0000 0000 0001
1101 1111 1111 1111
0110 1111 1111 1111
1010 0000 0000 0001
1100 1111 1111 1110
0110 0111 1111 1111
0011 0011 1111 1111
1010 0000 0000 0001
1001 0011 1111 1110
0100 1001 1111 1111
0010 0100 1111 1111
1010 0000 0000 0001
1000 0100 1111 1110
0100 0010 0111 1111
0010 0001 0011 1111
1010 0000 0000 0001
1000 0001 0011 1110
0000 0011
1000 0001 0011 1101
0100 0000 1001 1110
1010 0000 0000 0001
1110 0000 1001 1111
0111 0000 0100 1111
1010 0000 0000 0001
1101 0000 0100 1110
0110 1000 0010 0111
0011 0100 0001 0011
1010 0000 0000 0001
1001 0100 0001 0010
0100 1010 0000 1001
0010 0101 0000 0100
1010 0000 0000 0001
1000 0101 0000 0101
0100 0010 1000 0010
1010 0000 0000 0001
1110 0010 1000 0011
0111 0001 0100 0001
1010 0000 0000 0001
1101 0001 0100 0000
D1H 40H
Higher Lower
Byte Byte
1
1
0
1
0
1
0
1
1
1
0
1
0
1
1
1
Initial value
Address
ExOr Result
Shift 1
ExOr Result
Shift 2
ExOr Result
Shift 3
Shift 4
ExOr Result
Shift 5
Shift 6
ExOr Result
Shift 7
Shift 8
ExOr Result
Function Code
ExOr Result
Shift 1
ExOr Result
Shift 2
ExOr Result
Shift 3
Shift 4
ExOr Result
Shift 5
Shift 6
ExOr Result
Shift 7
ExOr Result
Shift 8
ExOr Result
CRC-16 Result
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MEMOBUS Message Example
An example of MEMOBUS command/response messages is given below.
Reading Inverter Memory Register Contents
The content of maximum 16 inverter memory registers can be read out at a time.
Among other things the command message must contain the start address of the first register to read out and the quantity of registers. The response message will contain the content of the first and the consecutive number of registers that has been set for the quantity.
The contents of the memory register are separated into higher 8 bits and lower 8 bits.
The following tables show message examples when reading status signals, error details, data link status, and frequency references from the slave 2 Inverter.
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave Address 02H Slave Address 02H Slave Address 02H
Function Code
Higher
Start Address
Lower
Higher
Quantity
Lower
Higher
CRC-16
Lower
03H
00H
20H
00H
04H
45H
F0H
Function Code
Data quantity
1st storage register
Higher
Lower
Next storage register
Next storage register
Higher
Lower
Higher
Lower
Next storage register
CRC-16
Higher
Lower
Higher
Lower
03H
08H
00H
65H
00H
00H
00H
00H
01H
F4H
AFH
82H
Function Code
Error code
CRC-16
Higher
Lower
83H
03H
F1H
31H
Loop back Test
The loop back test returns command messages directly as response messages without changing the contents to check the communications between the master and slave.
The following table shows a message example for performing a loop back test with the slave no. 1.
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave address
Function code
01H
08H
Slave address
Function code
01H
08H
Slave address
Function code
01H
89H
Test Code
Data
CRC-16
Higher
Lower
Higher
Lower
Higher
Lower
00H
00H
A5H
37H
DAH
8DH
Test Code
Data
CRC-16
Higher
Lower
Higher
Lower
Higher
Lower
00H
00H
A5H
37H
DAH
8DH
Error Code
Higher
CRC-16
Lower
01H
86H
50H
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Writing to Multiple Inverter Memory Registers
The writing of inverter memory registers works similar to the reading process, i.e. the address of the first register that has to be written and the number of registers must be set in the command message.
The data registers which shall be written must be consecutive, starting from the specified address in the command message. The data order must be higher 8 bits, then lower 8 bits. The data must be in memory register address order.
The following table shows an example of a message where a forward operation has been set with a frequency reference of 60.0 Hz for the inverter with the slave address 01H.
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave Address
Function Code
01H
10H
Slave Address
Function Code
01H
10H
Slave Address
Function Code
01H
90H
Start Address
Quantity
Higher
Lower
Higher
Lower
No. of data
Higher
Lead data
Lower
Higher
Next data
Lower
Higher
CRC-16
Lower
04H
00H
01H
02H
00H
01H
00H
02H
58H
63H
39H
Start Address
Quantity
CRC-16
Higher
Lower
Higher
Lower
Higher
Lower
00H
01H
00H
02H
10H
08H
Error code
Higher
CRC-16
Lower
* No. of data = 2 x (quantity)
02H
CDH
C1H
IMPORTANT
For the number of data value in the command message the double value of the data quantity must be
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Monitor Data
The following table shows the monitor data. Monitor data can only be read.
Register Address.
Contents
Inverter status signal
Bit 0 During run
0010H
0011H
0012H
0013H
0014H
0015H
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A
Bit B
Bit C
Bit D
Bit E
Bit F
Bit D
Bit E
Bit F
Fault Content 2
Bit 0
Bit 1
Bit 2
Bit 3
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A
Bit B
Bit C
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bits 8 to D
Bit E
Bit F
Operator status
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4 to F
Zero speed
During reverse operation
Reset signal active
During speed agree
Inverter ready
Minor fault
Major fault
Not used
ComRef status
ComCtrl status
During OPE alarm
During fault
Operator in programming mode
0: Digital operator attached 1: PC connected
Not used
OPE Fault Number
Not used
Fault Content 1
Bit 0 PUF, DC bus fuse blown
Bit 1
Bit 2
Bit 3
Bit 4
UV1
UV2
UV3
Not used
GF, Ground fault
OC, Over current
OV, DC bus over voltage
OH, Inverter heatsink overheat pre-alarm
OH1, Inverter heatsink overheat
OL1, Motor overload
OL2, Inverter overload
OL3, Overtorque detection 1
OL4, Overtorque detection 2
RR, Internal braking transistor fault
RH, Inverter mounted braking resistor overheat
EF3, External fault set on terminal S3
EF4, External fault set on terminal S4
EF5, External fault set on terminal S5
EF6, External fault set on terminal S6
EF7, External fault set on terminal S7
Not used
Not used
OS, Overspeed detected
DEV, Speed deviation detected
PGO, PG disconnected
PF, Input phase loss
LF, Output open phase
OH3, Motor overheat pre-alarm (PTC analog input)
OPR, Digital operator disconnected
ERR, EPROM error
Not used
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Register Address.
0016H
0017H
0018H
0019H
001AH
001BH
Alarm Content 2
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8 to B
Bit C
Bit D
Bit E
Bit F
Not used
Alarm Content 1
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A
Bit B
Bit C
Bit D/E
Bit F
Contents
Fault Content 3
Bit 0
Bit 1
Bit 2/3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A to F
CE, Memobus communications error
BUS, Bus option communications error
Not used
CF, Control fault
SVE, Zero servo fault
EF0, External fault from optional input card
Not used
UL3, Undertorque detection 1
UL4, Undertorque detection 2
Not used
CPF Fault Content 1
Bit 0/1 Not used
Bit 2
Bit 3
Bit 4
Bit 5
CPF02
CPF03
Not used
CPF05
Bit 6
Bit 7 to F
CPF06
Not used
CPF Fault Content 2
Bit 0 CPF20
Bit 1
Bit 2
Bit 3
Bit 4 to F
CPF21
CPF22
CPF23
Not used
UV, DC bus undervoltage
OV, DC bus overvoltage
OH, Inverter heatsink overheat pre-alarm
OH2, Inverter overheat alarm input by a digital input
OL3, Overtorque detection 1
OL4, Overtorque detection 2
EF, Forward/Reverse input set at the same time
BB, Baseblock active
EF3, External alarm set on terminal S3
EF4, External alarm set on terminal S4
EF5, External alarm set on terminal S5
EF6, External alarm set on terminal S6
EF7, External alarm set on terminal S7
Not used
OS, Overspeed alarm
DEV, Speed deviation
PGO, PG disconnected
OPR, Digital operator disconnected
CE, Memobus communications error
BUS, Communications error
CALL, Memobus communications on standby
OL1, Motor overload
OL2, Inverter overload
Not used
CALL, Communications on standby
UL3, Undertorque detection 1
UL4, Undertorque detection 2
Not used
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Register Address.
0020H
0021H
0022H
0023H
0024H
0025H
0026H
0027H
0028H
0029H
002AH
002BH
Contents
Inverter status
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bits 8 to F
Error details
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A
Bit B
Forward operation
Reverse operation
Inverter startup complete 1: Completed 2: Not completed
Error
Data setting error
Multi-function contact output 1 (terminal M1 - M2) 1: ON 0: OFF
Multi-function contact output 2 (terminal M3 - M4) 1: ON 0: OFF
Multi-function contact output 3 (terminal M5 - M6) 1: ON 0: OFF
Not used
Bit C
Overcurrent (OC), Ground fault (GF)
Main circuit overvoltage (OV)
Inverter overload (OL2)
Inverter overheat (OH1, OH2)
Braking transistor/resistance overheat (rr, rH)
Fuse blown (PUF)
Not used
External error (EF, EFO)
Control board error (CPF)
Motor overload (OL1) or overtorque 1 (OL3) detected
PG broken wire detected (PGO), Overspeed (OS), Speed deviation (DEV)
Main circuit undervoltage (UV) detected
Main circuit undervoltage (UV1), control power supply error (UV2), inrush prevention circuit error (UV3), power loss
Missing output phase (LF)
MEMOBUS communications error (CE)
Operator disconnected (OPR)
Bit D
Bit E
Bit F
Data link status
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bits 5 to F
Frequency reference
Writing data
Not used
Not used
Upper and lower limit errors
Data integrity error
Not used
Monitors U1-01
Output frequency Monitors U1-02
Output voltage Monitors U1-06
Output current
Output power
Monitors U1-03
Monitors U1-08
Torque reference Monitors U1-09
Not used
Not used
Control terminals input status
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bits 7 to F
Input terminal S1 1: ON 0: OFF
Input terminal S2 1: ON 0: OFF
Multi-function input terminal S3 1: ON 0: OFF
Multi-function input terminal S4 1: ON 0: OFF
Multi-function input terminal S5 1: ON 0: OFF
Multi-function input terminal S6 1: ON 0: OFF
Multi-function input terminal S7 1: ON 0: OFF
Not used
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Register Address.
002CH
002DH
002EH - 0030H
0031H
0032H
0033H
0034H - 003AH
003BH
003CH
003DH
Contents
Inverter status
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit A
Bit B
Bit C
Bit D
Bit E
Bit F
Operation
Zero speed
Frequency agree
User-defined speed agree
Frequency detection 1:
Frequency detection 2:
Inverter startup completed
Undervoltage detection
Baseblock
Frequency reference mode
Run command mode
Overtorque detection
Frequency reference lost
Restart enabled
1: Operating
1: Zero speed
1: Agreement
1: Agreement
1: Output frequency
≤ L4-01
1: Output frequency ≥ L4-01
1: Startup completed
1: Detected
1: Inverter output baseblock
1: Not communication 0: Communication option
1: Not communication 0: Communication option
1: Detected
1: Lost
1: Restarting
Error (including MEMOBUS communications time-out) 1:Error occurred
MEMOBUS communications time-out1: Timed out
Multi-function contact output status
Bit 0 Multi-function contact output 1 (terminal M1-M2) 1: ON 0: OFF
Bit 1
Bit 2
Bits 3 to F
Not used
Multi-function contact output 2 (terminal M3-M4) 1: ON 0: OFF
Multi-function contact output 3 (terminal M5-M6) 1: ON 0: OFF
Not used
Main circuit DC voltage
Torque Monitor U1-09
Power Monitor U1-08
Not used
CPU software number
Flash software number
Communications error details
Bit 0 CRC error
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bits 7 to F kVA setting
Control method
Invalid data length
Not used
Parity error
Overrun error
Framing error
Time-out
Not used
003EH
003FH
Note: Communications error details are stored until an error reset is input.
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Inverter Error Codes
The content of a current fault and faults that have occurred earlier can be read out by Memobus using the Fault
Trace (U2-) and the Fault History (U3-) parameters. The fault codes are shown in the table below.
Fault
Code
01H
Fault Description
PUF
Fault
Code
14H
Fault Description
EF6
Fault
Code
37H
Fault Description
SE1
02H UV1 15H EF7 38H SE2
0CH
0DH
0EH
0FH
10H
11H
12H
13H
08H
09H
0AH
0BH
03H
04H
06H
07H
RH
EF3
EF4
EF5
OL2
OL3
OL4
RR
UV2
UV3
GF
OC
OV
OH
OH1
OL1
27H
28H
29H
2AH
21H
22H
25H
26H
18H
19H
1AH
1BH
1CH
1DH
1EH
1FH
CE
BUS
CF
SVE
EF0
FBL
UL3
UL4
OS
DEV
PGO
PF
LF
OH3
OPR
ERR
8AH
8BH
91H
92H
93H
94H
86H
87H
88H
89H
39H
83H
84H
85H
CPF09
CPF10
CPF20
CPF21
CPF22
CPF23
SE3
CPF02
CPF03
CPF04
CPF05
CPF06
CPF07
CPF08
ENTER Command
When parameters are written in the Inverter from a PC/PLC using MEMOBUS communications, the parameters are temporarily stored in the parameter data area of the Inverter. To enable these parameters in the parameter data area, an ENTER command must be used.
There are two types of ENTER commands:
•
ENTER commands that enable parameter data in RAM only (changes will be lost after power loss)
•
ENTER commands that write data into the EEPROM (non-volatile memory) of the Inverter and enable the data in RAM at the same time.
Register Address.
0900H
Contents
Write parameter data to EEPROM, RAM is refreshed
0910H Parameter data are not written to EEPROM, but refreshed in RAM only.
An ENTER command is performed by writing 0 to register number 0900H or 0910H.
IMPORTANT
• The EEPROM can be written up to 100,000 times only. Do not frequently execute ENTER commands (0900H) which write into the EEPROM.
• The ENTER command registers are write-only registers. Consequently, if these registers are read out, error code
02H is returned.
• An ENTER command is not required if reference or broadcast data are sent to the inverter.
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Communication Error Codes
The following table shows MEMOBUS communications error codes.
Error Code Contents
01H
Function code error
A function code other than 03H, 08H, or 10H has been set by the PLC.
02H
Invalid register number error
• The specified register address does not exist.
• With broadcast sending, a start address other than 0001H, or 0002H has been set.
03H
21H
22H
23H
24H
Invalid quantity error
• The number of data packets (register content) being read or written is outside the range of 1 to 16.
• In write mode, the number of data bytes in the message is not No. of packets x 2.
Data setting error
• A simple upper limit or lower limit error has occurred in the control data or when writing parameters.
• When writing parameters, the parameter setting is invalid.
Write mode error
• Attempting to write parameters to the inverter during operation.
• Attempting to write via ENTER commands during operation.
• Attempting to write parameters other than A1-00 to A1-05, E1-03, or 02-04 when warning alarm CPF03 (defective EEPROM) has occurred.
• Attempting to write read-only data.
Writing during DC bus undervoltage (UV) error
• Writing parameters to the inverter during UV (DC bus undervoltage) alarm.
• Writing via ENTER commands during UV (DC bus undervoltage) alarm.
Writing error during parameters processing
Attempting to write parameters while processing parameters in the Inverter.
Slave Not Responding
In the following cases, the slave ignores the write function.
•
When a communications error (overrun, framing, parity, or CRC-16) is detected in the command message.
•
•
When the gap between two blocks (8 bit) of a message exceeds 24 bits.
When the command message data length is invalid.
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Key features
Compact design for easy installation in tight spaces
Advanced safety features to ensure passenger safety
Precise speed control for smooth and comfortable rides
Energy-saving features to reduce operating costs
Easy-to-use interface for quick and simple setup
Built-in diagnostics for fast troubleshooting
Wide range of communication options for easy integration with other systems
Frequently asked questions
The Omron L7 is a frequency inverter designed specifically for lifts.
The Omron L7 offers a range of advanced features, including compact design, easy installation, intuitive operation, advanced safety features, precise speed control, energy-saving features, easy-to-use interface, built-in diagnostics, and wide range of communication options.
The Omron L7 offers a number of benefits, including improved safety, reduced operating costs, increased passenger comfort, and easier maintenance.
Refer to the user manual for detailed instructions on how to install the Omron L7.
The Omron L7 has an intuitive interface that makes it easy to operate. Refer to the user manual for detailed instructions on how to operate the Omron L7.
The Omron L7 has built-in diagnostics that make it easy to troubleshoot. Refer to the user manual for detailed instructions on how to troubleshoot the Omron L7.